Sumitomo HTR Z III

[Enid06M6]

With all the good reviews I decided to go with these tires. One question I have though, is what size should I go with?

I have stock 18's, if I would like to be able to rotate them what is the max width? 245's 255's ect?

If I want to go wide as possbile on the back with no concern about rotating them how large can I go? I saw one guy on here that put on 275's.

That's for your help, I searched this out but got mixed reviews and couldn't find anyone that bought these tires for stock 18's that discussed the size.

Scott

[Jeff1003]

I would go with 275's and roll the fenders.

[Enid06M6]

I've got bags and I see 275's will fit regardless on the back. I'm guessing not on the front.

Anyone do 245's or 255's all the way around? I wouldn't mind 275s on the back if it was stable at high speeds.

Scott

[doc314]

275 are a little wide for the stock rims. I have 275's on 18x9.5" (+45 bs) and had to use drag bags (spring sag) and grind my fender lips down to get them to fit. 245's on 18x8's (+35 bs) up front, which fit with no problems at all.

[Enid06M6]

275 are a little wide for the stock rims. I have 275's on 18x9.5" (+45 bs) and had to use drag bags (spring sag) and grind my fender lips down to get them to fit. 245's on 18x8's (+35 bs) up front, which fit with no problems at all.

Yeah I decided on and ordered 245's all around. I found a post with some people that used this size on a stock GTO with no problems. I know the 245's will fit the back but it was strut rub I was worried about. Some have had 245's rub on the front, but with these particular tires no one has had that issue.

Thanks for the help,
Scott

[smoop1]

i just swapped 245/35-19 htr-z iii's to 255/35-19 all around earlier this week. so far, my initial impression: love the grip!

when i first went with the htr-z iii in 245, they replaced bridgestone potenza re050As, to which they compared quite favourably… then again, this may be due to the fact that the htr-z iii seems to run a bit wider than other tyres of (nominally) similar size [tirerack specs (http://www.tirerack.com/tires/Spec.jsp?make=Sumit omo&model=HTR+Z+III) the 245 htr-z iii's tread width at 9.1"—comparable to 255s (http://www.tirerack.com/tires/Spec.jsp?make=Bridg estone&model=Potenza+RE050A) or wider (http://www.tirerack.com/tires/Spec.jsp?make=Goody ear&model=Eagle+F1+Asymmetric) from other manufacturers (http://www.tirerack.com/tires/Spec.jsp?make=Conti nental&model=ContiSportContact+3)]. so with the 255s even wider that that, they definitely feel more planted.

some downsides however: with 255s squeezed onto 8.5x19 ssr gt2's, the unfortunate 'muffin top' (http://www.flickr.com/photos/malingering/49650713 1/) effect becomes that much more pronounced. with wheel offset at et40, there is also a touch of rub on the fender. and with increasing sidewall a smidge comes a slight loss in steering precision.

i still like running non-staggered, not simply only out of convenience, but also the fact that with our cars' slight front weight bias, they should get a good amount of tyre up front. nevertheless, i would recommend (optimally) at least a 9" wide wheel for 255s and some creative fender/strut modification.