Wheel & tire fitting results!!

[Howie]

Results of yesterday's wheel & tire test fitting w/ ROH wheels:

Factory wheels & tires:
17x8 w/ 245/45/17
55lbs each (wheel & tire)
5x120mm stud pattern
48mm backspacing

17's
Front:
245/45/17 is still the best fit
255/40/17 fit but had to use a 8.5" wide wheel, the required backspacing hadthe wheels/tire sticking out too from the body line
275/40/17 didn't fit, using a 9" wide wheel, the tire was rubbibg the strut. Again using a different backspacing would have the set sticking out too far

ROH Drift R 17x8 w/ 245/45/17 - 47lbs
ROH Drift R 17x9 w/275/40/17 - 49lbs

Rear:
275/40/17 fit no problems on a 17x9" wheel
These stick out just a little more than the factory tires, but I think they still look great!

Recommendation for 17" wheels: Use your factory tires and and put them on 17x8" custom wheels or 17x8" wheel front w/ 245/45/17 tires and 17x9" wheel rear w/ 275/40/17 tires

Personally I would just reuse the factory tires and put 17x8" wheels at all four corners. This will be cheaper to do and looks good.

18's
By far the best way to go!!

Front:
18x8 w/ a 245/40/18 tire - fit is perfect
18x8.5 w/ 255/40/18 - again sticks out too far

Rear:
18x9 w/ a 275/35/18 tire - fit is perfect

Recommendation for 18" wheels: Without a doubt the best set is 18x8 up front with 245/45/18 matched with 18x9 out back w/ 275/35/18. This set looks great, fits porportionally and lets you pick up some width out back. The ride quality is also great. Or use 18x8 and 245/40/18 at all four corners.

ROH Drift R 18x8 w/ a 245/40/18 tire - 49lbs
ROH Drift R 18x9 w/ a 275/35/18 tire - 51lbs

19's

Front
245/35/19 on a 19x8" wheel

Rear
275/30/19 on a 19x9" wheel

Recommendation for 19" wheels: GO BACK TO 18"!! While the look great on the car the ride quality is horrible. If you could care less about feeling every bump in the road and want all the look, these are for you. If you just gotta have them then use 19x8 w/ 245/35/19 front and 19x9 w/ 275/35/19 rear or the 19x9 w/ 245/35/19 all the way around.

I have some pics from the fitting I just need to get them off of my disc. I'll get some pics of my Goat with the set up I'm going with and personally recommend,
18x8 w/ 245/4018 front and 18x9 w/ 275/35/18 rear. If I'd been working at Pontiac this is what I would have sold the car with!!

By the way, anyone interested in ROH or other custom wheels contact me I now have pricing and availability info!!

More info coming soon, car is at Baer brakes today!!!

[Tails]

:bubbrub
:drink: :drink:

[DevilYellow]

Pictures please!!!

No 18x10 305/35/18 ???

:( :( :( :( :( :(

[bobby]

What about a 255/45 or 265/45 ?

[bobby]

What about a 255/45 or 265/45 ? 17's

[Howie]

Pictures please!!!

No 18x10 305/35/18 ???

:( :( :( :( :( :(


You know how much I wanted those to fit, but no way. 275/35/18 really are the max.

Pics will be up as soon as I get them off of the memory stick.

[DevilYellow]

Time for the AP Mini-Tub Kit :D

[cvp33]

Stock vs. 18" rears = 9.7" patch vs. 11.1". I think we ALL will need the extra 1.4 inches.

[BillyGoatGruff]

Someone needs to come up with a brake caliper that will fill all of the space between my brake rotors and my wheels. Does anyone know if Brembro or wilwood has one yet?

[mtu_gto]

You know how much I wanted those to fit, but no way. 275/35/18 really are the max.

Pics will be up as soon as I get them off of the memory stick.

Hurry up with the pics yo.... :)

[Tails]

He can't remember.....
:drink: :drink:

[DevilYellow]

I want to order the ROH Strada's but am waiting for pictures :)

[cvp33]

Ask Pendragon to photo shop them for you.

[tterbo]

What offset was necessary to get the 275/35s on the rear?

[DevilYellow]

I'll let you know Brett.... I ordered tires and am going to order the wheels soon...

275/35/18 in the back
245/40/18 in the front

Looking at the ROH Strata (Modena with the indents cut out)

[ghqman]

I'm waiting to see pics, as well as hearing the report on the brakes. Guess I want to make sure I can stop before I try to make it go faster ...

[hada64]

Recognizing that 9" wheel is recomended, what happens if you put the 275's on 8" wheels. Britus? Howie?

[EDC]

I think we ALL will need the extra 1.4 inches.
That is just too funny to let slide by... :D
.
.
.

Are there any wheels that look more "race-car" or "muscle-car" without looking like some "ricer"??? I really don't want, or like the look of a "Super Street Magazine" Ghetto Mazda...

It's a muscle car right?

Ed

[cvp33]

EDC,

So far you, tails and davbo are the only ones that consistently hit my softballs. I wonder how many get my sick sense of humor.

[Howie]

http://www.newagegto.com/forum/index.php?act=Garag e&CODE=12&CID=6

Pics in the above link.

[EDC]

EDC,

So far you, tails and davbo are the only ones that consistently hit my softballs. I wonder how many get my sick sense of humor.

Warped minds think alike... :wall:

Ed

[hada64]

EDC,

So far you, tails and davbo are the only ones that consistently hit my softballs. I wonder how many get my sick sense of humor.


Oh, I noticed. :slap:

[cjlannoy]

Howie, I love those wheels and tires, can you tell a big difference when launching? I'd love to get track times with that. You mention you have 2 mods, are you counting tires and wheels as 2 or have you done something else to the car?

[cvp33]

Suddenly a stock wheeled GTO looks weak and meager. Thanks a lot Howie! You $uck.

[Adam4356]

Those wheels do look nice. I figure i won't be in the market for wheels for about a year. that gives me time to get the penny jar going :)

[hada64]

http://www.newagegto.com/forum/index.php?act=Garag e&CODE=12&CID=6

Pics in the above link.


Can you comment on the different tires shown?

[Howie]

Can you comment on the different tires shown?

On the left, 18x8 with 245/40ZR18 Toyo T1-S
Center, stock setup: 17x8 with 245/45/17 BFG
On the right, 18x9 with 275/35ZR18 Toyo T1-S (fits on rear only)

[GTO_Again]

Howie,

What is the brand and style of the wheel ?

Thanks

[Howie]

Howie,

What is the brand and style of the wheel ?

Thanks


Intro Vistas, I have them in stock and ready to ship with or without tires. Contact me if you're interested in a set. Thanks!

[cjlannoy]

does the 18" wheel/tire combo change the overall diameter of the wheels? I'm wondering how it affects your speedometer?

[cjlannoy]

also, your web site doesn't seem to be working, won't show me anything.

[ghqman]

They are both within 0.4% of stock size.

[Howie]

does the 18" wheel/tire combo change the overall diameter of the wheels? I'm wondering how it affects your speedometer?

Stock, 245/45/17: 25.7"

245/40/18: 25.7"
275/35/18: 25.6"

You can either run the wider 275's out back or run the 245/40/18 all the way around. Contact me if you're interested in a set. Thanks!!

[tminer]

I believe that 275/35/18 should be 25.6", not 26.5". Tire wear generally amounts to 1/2" over the life of a passenger tire, so .1" isn't significant.

Tom

[Howie]

I believe that 275/35/18 should be 25.6", not 26.5". Tire wear generally amounts to 1/2" over the life of a passenger tire, so .1" isn't significant.

Tom

Just a typo, fixed now. Thanks!

[cjlannoy]

Howie, I pm'd you.

[Monaro]

The speedo needs correcting when u change wheel size even though it is only a slight amount in the circumference. About 1km/h each plus one fitting.
I have GMH GTS wheels on my Monaro they are 19x8 with 245/35 Dunlop fm901 tires. Our roads are as smooth as a babies bottom and u cant really feelmuch difference over the 18's that come std over here.

[MikeMach1]

I've seen these wheels by "Wheel Vintiques" called Pontiac Billet. They come in 17" and 18" sizes, look fairly retro. Also I wonder if it is possible to go with 17" fronts and 18" rears? Would it give it a fairly good raked look?

What do you guys think?

- Mike

[cjlannoy]

I just found out the 275/35wr18 won't fit on the gto back wheels. I was wondering if this wheel will fit with 265/35x18 on the back and 245/40wr18 on the front with a 8.5" wide rim.
Would someone be able to photoshop this onto a black GTO?

[cjlannoy]

Also, I found out that the bolt pattern is 5x4.75 which works out to 5x120.6 will that still work?

[cjlannoy]

CJ.. made a wheelchop of that rim, not great , but looks pretty cool. see it here..
http://www.cardomain.com/memberpage/506724/3
Or here if that link doesnt work, click on page 3.. http://members.cardomain.com/stormguy04

I'm getting a set of 18" Intro Vista's Polished made, be about 4-6 weeks before they get here though. see example on that same link above.

Robin

:)
Thanks, the latest info I have says the wheels are 5x120 with a very large offset and those wheels won't work, but I haven't got anything definate yet. I like the photochop though.

[RAZRS EDGE]

Those tires and wheels sure can make a difference. Need to take it to the track and see if the tires made any kind of difference! Look forward to owning a set of those when I get mine. Awesome Car! :drink:

[dms]

I am having some 18" BBS wheels specially made for the GTO. still will have to role the inner fenders. But I really like BBS wheels. Will take a picture of them when I have the them on. I stepped up the BF Goodrich to their newer, better performance tire, kept the same size but obviously went to 18" plus reduced the aspect ratio. Diameter stayed the same. With the custom work done, still am 5mm off the set back. Rolling the inner fenders should take take of this. The grey BBS wheel looks so hot on every color GTO. :)

[4th GTO]

I am having some 18" BBS wheels specially made for the GTO. still will have to role the inner fenders. But I really like BBS wheels. Will take a picture of them when I have the them on. I stepped up the BF Goodrich to their newer, better performance tire, kept the same size but obviously went to 18" plus reduced the aspect ratio. Diameter stayed the same. With the custom work done, still am 5mm off the set back. Rolling the inner fenders should take take of this. The grey BBS wheel looks so hot on every color GTO. :)
DMS
How do you plan on rolling the inner fenders? I might need to do this and also thought about grinding some off with a die grinder.

[cjlannoy]

I have a fender roller that I borrowed for the inner lip, see the link below for info.
http://www.bmw-m.net/Gallery/haweka.htm

And yes you may have a rub problem with a 40 mm offset, I had to roll the right rear fender, however the left side was ok and I know some cars are ok with the 40 mm offset, just depends on how the car fit together.

[Shocker]

went to discount tires Co. and the Manager told me I could put on the 285/40/17 and will have no problem? I want 275/40/17 matching tires BFG KDWS will these fit anyone else change.

[Lil Cosmos GTO]

I put my 275x40x17 Z28 wheels and tires on the GTO and they do in fact fit. I dont like the spindly appearrance of the 5 spoke chrome wheels though. I have some pics if anyone is interested.

[GTOdriver7]

I put my 275x40x17 Z28 wheels and tires on the GTO and they do in fact fit. I dont like the spindly appearrance of the 5 spoke chrome wheels though. I have some pics if anyone is interested.

sure, post em

[Lil Cosmos GTO]

I havent posted any pics here yet. How is it done?

[GTOdriver7]

I havent posted any pics here yet. How is it done?

click on "go advanced".
then "manage attachments". download, and post. very simple. they have to be less than 100k

[Lil Cosmos GTO]

Thanks, I will give it a shot.

[Lil Cosmos GTO]

My pics take up too much space 881 kb. sorry.

[Lil Cosmos GTO]

Finally downsized my pics and will try again.

[Lil Cosmos GTO]

Another pic.

[Lil Cosmos GTO]

Rear angle view of 245 tire

[Lil Cosmos GTO]

Rear angle view 275 tire

[GTOdriver7]

Rear angle view of 245 tire

you can attach up to 5 images per post.

unless of course you are trying to up your posts :)

[Lil Cosmos GTO]

Side angle view 275 tire

[Lil Cosmos GTO]

I thot i couldnt exceed 100 kb total

[GTOdriver7]

I thot i couldnt exceed 100 kb total

no, just per pic. sorry about not being clear.

[Lil Cosmos GTO]

Will try to submit more pics at a time. Sorry, still learning the system.

[Lil Cosmos GTO]

No problem, as I said, I am just learning th system. Any help is appreciated. I am an old fart still trying to learn the computer operation. In my mid-life crisis situation. Thanks for your help.

[Dbluegoat]

unless of course you are trying to up your posts :)
dont even talk about that out loud......you will get the devil after you.... :sneaky:

[Lil Cosmos GTO]

I dont think the "Devil" can catch me. I am no longer young in age, but am in spirit.

[AMRAAM4]

Hey Bryce Woodall, I take it YOU MUST be getting rubbing on these rear wheels?????

[Lil Cosmos GTO]

No way on the rubbing. The rears fit great. The fronts, I wouldnt even try.

[AMRAAM4]

No way on the rubbing. The rears fit great. The fronts, I wouldnt even try.

Hmmm, then here is my question, and others can chime in as well. And let me add I have been messing with wheels for years now...

If your 275s in the rear are that much wider (see comparison shot)...and they mount up and you can drive without rubbing (because we can clearly see they are out and UNDER the rear quarter lip)....why did "cjlannoy" get rubbing on a +38 offset with correctly resized tires (from 245/45/17 to 245/40/17) when his were out under the quarter lip???

I mean, the stock height on his tires stayed the same, and the lower positive offset is sticking them out under the lip (the same as your's, or Howie's suggestion of a 9" with 275s)...so I am baffled why he was rubbing..Hmm

[dede]

Hmmm, then here is my question, and others can chime in as well. And let me add I have been messing with wheels for years now...

If your 275s in the rear are that much wider (see comparison shot)...and they mount up and you can drive without rubbing (because we can clearly see they are out and UNDER the rear quarter lip)....why did "cjlannoy" get rubbing on a +38 offset with correctly resized tires (from 245/45/17 to 245/40/17) when his were out under the quarter lip???

I mean, the stock height on his tires stayed the same, and the lower positive offset is sticking them out under the lip (the same as your's, or Howie's suggestion of a 9" with 275s)...so I am baffled why he was rubbing..Hmm

Z28 offset +55

[cjlannoy]

Hmmm, then here is my question, and others can chime in as well. And let me add I have been messing with wheels for years now...

If your 275s in the rear are that much wider (see comparison shot)...and they mount up and you can drive without rubbing (because we can clearly see they are out and UNDER the rear quarter lip)....why did "cjlannoy" get rubbing on a +38 offset with correctly resized tires (from 245/45/17 to 245/40/17) when his were out under the quarter lip???

I mean, the stock height on his tires stayed the same, and the lower positive offset is sticking them out under the lip (the same as your's, or Howie's suggestion of a 9" with 275s)...so I am baffled why he was rubbing..Hmm
my wheels are actually 40 mm offset which means they stick outboard from the car about 8mm farther than the stock wheels (if I remember the numbers right, I haven't read all the old posts again yet). This allowed me to roll the fenders as 8mm is only about 1/3 inch to get clearance.

[AMRAAM4]

Z28 offset +55

I know, but you and cjlannoy are missing the point. Regardless of offset, on Bryce Woodall's car, from a pure physical layout his tires/wheels are wide enough to cause them to sit under the rear fender lip (and I am sure their diameter is the same as stock or possibly a tad larger). Regardless of offset, rim width, etc., according to what some have said here this should cause rubbing if the tire is placed out that far, but it's not. This may show that lower offsets from stock (+38 to +47) should work and not rub so long as you have stock suspension.

[cjlannoy]

I know, but you and cjlannoy are missing the point. Regardless of offset, on Bryce Woodall's car, from a pure physical layout his tires/wheels are wide enough to cause them to sit under the rear fender lip (and I am sure their diameter is the same as stock or possibly a tad larger). Regardless of offset, rim width, etc., according to what some have said here this should cause rubbing if the tire is placed out that far, but it's not. This may show that lower offsets from stock (+38 to +47) should work and not rub so long as you have stock suspension.
I don't completely understand what you are saying but my tires rubbed with the stock suspension because under hard acceleration or cornering the back end squats and the tires move up under the fender which is only about 1/4" outboard of the stock tires. Therefore, if you put tires on that stick out any farther than stock they will rub. There is plenty of room inboard on the rear tires which allows you to put wider tires on and there is room up under the fender if you manage to clear the lip to put slightly taller tires on.

[AMRAAM4]

I don't completely understand what you are saying but my tires rubbed with the stock suspension because under hard acceleration or cornering the back end squats and the tires move up under the fender which is only about 1/4" outboard of the stock tires. Therefore, if you put tires on that stick out any farther than stock they will rub. There is plenty of room inboard on the rear tires which allows you to put wider tires on and there is room up under the fender if you manage to clear the lip to put slightly taller tires on.

:bomb: Look at the pics and see how much wider Bryce's tires are then stock.....Look where they sit out from the wheel well.....a +35 to +47 would sit in the same place, approximately. Bryce is not getting rubbing. A 245/40/18 tire would not be any taller than Bryce's either. :bomb:

Why they put such a high offset design on a RWD car boggles me. Generally RWD cars are in the high +30's-low +40's. Needing to have a high +40 or low +50 offset wheel is going to drastically limit wheel choices.

[dede]

Why they put such a high offset design on a RWD car boggles me. Generally RWD cars are in the high +30's-low +40's. Needing to have a high +40 or low +50 offset wheel is going to drastically limit wheel choices.

HUH??
stock offset for camaro, trans am or corvette +55 !!
48 is not high at all

[AMRAAM4]

HUH??
stock offset for camaro, trans am or corvette +55 !!
48 is not high at all

I forgot that Camaro's, TAs and Vettes are the only RWD cars made

[ArlingtonGoat]

I forgot that Camaro's, TAs and Vettes are the only RWD cars made

How many do you need for that offset to be acceptable?

[dede]

I forgot that Camaro's, TAs and Vettes are the only RWD cars made
High offset is an easy way to reduce pressure on the wheels’ bearings
Especially if the engine has a high torque.
Porsche 911 has an offset of +50

[04 LS1-MAN]

Intro Vistas, I have them in stock and ready to ship with or without tires. Contact me if you're interested in a set. Thanks!

I WAS WANTING TO GO WITH 17"X8 ON THE FRONT AND 18"X9 ON THE REAR.
CAN YOU TELL ME WHAT YOU'D RECCOMEND FOR A SETUP LIKE THAT?
WOULD THAT BE A 245/45/17 AND A 275/45/18 OR DO YOU THINK THAT WOULDN'T BE A GOOD SETUP? WHICH SIZE TIRE WOULD YOU USE?

[lionsden]

I put my 275x40x17 Z28 wheels and tires on the GTO and they do in fact fit. I dont like the spindly appearrance of the 5 spoke chrome wheels though. I have some pics if anyone is interested.

So If these Camaro Wheels fit, Then why can we all look for camaro, firebird, corvette wheels?

I've seen some pretty cool & cheap wheels made for the Z28, Trans Am, & Corvette.

I thought someone mentioned that they wouldnt fit. All this wheel talk is drivin me crazy.

Thanks for all the help.