20" wheel with 255/35R20 Z rated falken(?)

[dms]

I have a supplier that claims he has a 20" wheel with a 255/35ZR20 tire (I think this is the size) that was custom made for the GTO and will fit. Has a container full coming. I yelled at him already today for not giving me electronic pictures for all of you to see. But if I buy the amount I told him I would and verify the fitment, I can sell them with tires for about $2300. Will have Falken Azenis tires.

Is this something everyone might be interested in? Could be a error on the size of tire. Will be a chrome wheel. Sorry about the incomplete info.
thanks
mike
dms

[Shocker]

God i love dubs, i really miss them, but i dont think i could ever stick them on the goat for any price.

[miscreant]

I have a supplier that claims he has a 20" wheel with a 255/35ZR20 tire (I think this is the size) that was custom made for the GTO and will fit. Has a container full coming. I yelled at him already today for not giving me electronic pictures for all of you to see. But if I buy the amount I told him I would and verify the fitment, I can sell them with tires for about $2300. Will have Falken Azenis tires.

Is this something everyone might be interested in? Could be a error on the size of tire. Will be a chrome wheel. Sorry about the incomplete info.
thanks
mike
dms
Mike,

You're right on the tire size, because the Azenis (ST-115) is offered in that size, and only three other sizes - there is a 245/35R20 as well), BUT that tire is 1.3" taller than stock. That's nuts, and will never fit in the front without impacting the spring perch. I just can't see it working. You need a 245/30R20 or MAYBE a 255/30R20 (but that's pushing it) for proper fitment.

BTW, hood and spoiler are being painted :)

[CSiJason]

Wow, that'd be huge on the GTO. I dont think I could even fathom 20's on my car. Talk about hurts over bumps.

[bnvus]

Wow, that'd be huge on the GTO. I dont think I could even fathom 20's on my car. Talk about hurts over bumps.


Amen to that. You will feel every grain of sand on the road :p

[TrakDay]

I might look nice, but I doubt it would be worth the sacrifice in ride quality!

[PHiL2]

The JBA show car has them on it!

http://jbaheaders.com/images/vehicles/04gto_big.jp g

[Sid3ways s13]

That must be the car that gained 35 at the rear wheels with their shorties :rolleyes: :bs: :p

[TrakDay]

I don't think I like the stance with the 20s, it brings the body of the car too high off of the ground.

[myfirstv8]

I want to see a GTO with 20's. I had once thought about it for my car.

[quacktheduck]

20s on a performance car...doesn't really add up. Too much rotating mass. 18 is as big as I'd go ever...just for practicality/way the car will be used. Something like a 300c now that would be ok since it's more of a luxo/cruise type.

[Yeller Jakett]

The JBA show car has them on it!

It's just that. A SHOW car. Not very practical.

[AmesGTO]

There a pic of a guy with 20's on the "other" forum. He didn't check into weight at all though. Says he doesn't care because the car is up to 500hp and he has fiberglass body panels. The car does look good, but the weight would scare me.

[AmesGTO]

20s on a performance car...doesn't really add up. Too much rotating mass. 18 is as big as I'd go ever...just for practicality/way the car will be used. Something like a 300c now that would be ok since it's more of a luxo/cruise type.
My 19's tire and rim weight are the same as the stockers. I can't imagaine 20's being able to stay around stock weight, but I suppose it's possible.

On my SS I'm going from 20's to 22's. I wanted to go 24's but the weight difference once you get around 20" seems to go up in huge increments.

[BlueGoat19]

20's on a GTO are a bit much. I'd say 19 is as big as you'd want to go before you start changing the look/performance of the car. If you're a spirited driver, you certainly don't want a huge wheel and tiny ass sidewall...especially in this car.

That's my 2 cents.

[AmesGTO]

20's on a GTO are a bit much. I'd say 19 is as big as you'd want to go before you start changing the look/performance of the car. If you're a spirited driver, you certainly don't want a huge wheel and tiny ass sidewall...especially in this car.

That's my 2 cents.
I agree. 19" rims are probably even a bit much for most people. I like them so far, it does make for a rough ride. I couldn't imagine 20's. I don't know if the performance is any better or worse on the 19's, but it feels better; you really feel the road. The key is weight. Check the weight and know what you are getting into.

[4CFED]

even though the weight of a +2 or a +3 combo might be the same weight as the stocker, and the overall diameter might be close, you still run the risk of shortening your brake life considerably. the weight of the newer rims/tires is farther away from the center hub, which increases the amount of rotational force (which in turn takes more force to reduce) if that makes any sense. this is why you notice a power difference (esp. on a dyno) with cars that have larger but lighter wheel and tire combos. it simply takes more power to get them to turn and to stop.

[Hendrix-Engineering]

ill try to get pics of mine looks good to me have 20s and inch and half drop 225 35 20s ride didnt change untill i lowered it but its not any worse than a vette front dosent give the problem just trimed the rear

[miscreant]

ill try to get pics of mine looks good to me have 20s and inch and half drop 225 35 20s ride didnt change untill i lowered it but its not any worse than a vette front dosent give the problem just trimed the rear
Front's not a problem because you are running 225/35. 255/35 aint gonna fit.

[mistermike]

18 is about the crossover point above which the increase in unsprung weight (all other things being equal) starts to compromise handling and offset the advantage of a shorter sidewall. Additionally, even if an 18 and 20 were the same mass, the moment of inertia for the 20 would be considerably higher. The suspension was designed for 18's.

[dms]

Update On 20" Wheels.

The Supplier Did Make An Error On The Tire Size.

To Start, The Wheel Is Between 26-32pounds For The 20", Which Is In Line With The Weight Of The Oem, And Lighter Than Many Of The Aftermarket Wheels. However, The Tire Would Have To Be A 255-30/20. Bfg Makes A Kdw This Size And So Does Conti-w2. However, The Prices Of These Tires Are More Significantly Higher. We Are Probably Looking At $2600 Plus Shipping.

The 255/30/20 Diameter Is 26.02 Versus 25.68 Of The Oem Tire. Just Want To Throw Out This Info For The Group.
Will Hopefully Hve Pictures Soon.
Thanks
Dms

[04torrid5.7]

Lets see some pics in chrome

[dms]

the file is too big for the forum. Click on the link and you can see them on a red 2005 GTO

http://community.webshots.com/photo/251295611/3178 80641ruLKhr


Your imput is requested
thanks
dms

[miscreant]

Is that the actual sizes, 20 x 9.5 and 20 x 10? The other problem I have is that is a photoshop of this pic from the pontiac site:

http://www.pontiac.com/gto/images/enlarge_image1.j pg

[miscreant]

Update On 20" Wheels.

The Supplier Did Make An Error On The Tire Size.

To Start, The Wheel Is Between 26-32pounds For The 20", Which Is In Line With The Weight Of The Oem, And Lighter Than Many Of The Aftermarket Wheels. However, The Tire Would Have To Be A 255-30/20. Bfg Makes A Kdw This Size And So Does Conti-w2. However, The Prices Of These Tires Are More Significantly Higher. We Are Probably Looking At $2600 Plus Shipping.

The 255/30/20 Diameter Is 26.02 Versus 25.68 Of The Oem Tire. Just Want To Throw Out This Info For The Group.
Will Hopefully Hve Pictures Soon.
Thanks
Dms
Mike, really 245/30R20 is the right size for the GTO, would be exact same rolling diameter and less chance of rubbing, and probably more tires out there in that size.

[Cyclone05Goat]

30 series tires are mighty thin. I can just picture someone bending a rim. im running 40 series 20's on my impala, and THAT worries me.

[dms]

For me to actually sell them, I want to test them. I use 305/35R24 on full size utilities and they are not too bad. I drove a $100K plus Mercedes with 30 series. Did not notice the ride because I was concentrating on not sh$%^&TING my pants becasue he was driving so fast/hard.

But someone out there may like them. Just want to throw the nes stuff coming out.

dms

[dms]

Mike, really 245/30R20 is the right size for the GTO, would be exact same rolling diameter and less chance of rubbing, and probably more tires out there in that size.


I agree with you. However, the supplier is insisting they will work. Might bet him a lunch on it. But he has the wheels coming in a couple of weeks. Tires are the variable.

mike
dms