LittleBlueGT Posted June 28, 2006 Share Posted June 28, 2006 Big fan of the 235/40/17 on a 17x7! Full tune of 68HTA, KSTech 73 MAF, Racer X FMIC and ID1000s................by the DataLog Mafia!!! Link to comment Share on other sites More sharing options...
Xenonk Posted June 28, 2006 Share Posted June 28, 2006 personally, I like having a 245/35/18 on a 18x8.5... or if you have aftermarket coilovers that have a smaller diameter shock body and that you want more cushion for the ride, 245/40/18 for the sedans are really nice. Dont expect to be blazing fast with the acceleration, but at least you get more gearing (top speed) out of the car per gear. Keefe Link to comment Share on other sites More sharing options...
EL PAALO Posted July 2, 2006 Share Posted July 2, 2006 Big fan of the 235/40/17 on a 17x7! why? if you drove the same tire on a 17x8 or 17x8.5 you'd realize how much you're missing. Link to comment Share on other sites More sharing options...
Xenonk Posted July 2, 2006 Share Posted July 2, 2006 why? if you drove the same tire on a 17x8 or 17x8.5 you'd realize how much you're missing. +896 (<--- number of tires I already gone through ) Keefe Link to comment Share on other sites More sharing options...
johndas Posted July 10, 2006 Share Posted July 10, 2006 So on a 18x8 should I go with the 225/40/18 or the 235/40/18? Plain and simple...it's decision time! Link to comment Share on other sites More sharing options...
zildjiank Posted July 10, 2006 Share Posted July 10, 2006 235/40 for sure... Link to comment Share on other sites More sharing options...
PGT Posted July 10, 2006 Share Posted July 10, 2006 nah....both are significantly larger than stock. 245/35/18 is close to stock OD and fits well on an 8" wheel. 235/40/18 is more of an STi size (they start with wider tires to begin with). Link to comment Share on other sites More sharing options...
Guest Posted October 24, 2007 Share Posted October 24, 2007 Bump for old thread. Is 235/45/17 on 7.5" really bad idea? I'd like both extra contact path plus bit of extra sidewall height. In a stiff tire like RE050A PP I'd hope it could be okay. Or I should play it safe and stick to 225/45/17 on 7.5"? The specs say it's acceptable combo: http://www.tirerack.com/tires/Spec.jsp?make=Bridgestone&model=Potenza+RE050A+Pole+Position&tirePageLocQty= Link to comment Share on other sites More sharing options...
PGT Posted October 24, 2007 Share Posted October 24, 2007 235/40/17 is the ticket. it works best on an 8" wheel though Link to comment Share on other sites More sharing options...
sirsimon Posted October 24, 2007 Share Posted October 24, 2007 Recently went with 234/40 on 18/8s...love 'em. Looks so much meaner too. Link to comment Share on other sites More sharing options...
praedet Posted October 24, 2007 Share Posted October 24, 2007 Why not a 245/40-17? Link to comment Share on other sites More sharing options...
azca Posted October 25, 2007 Share Posted October 25, 2007 I have 225/45/17 on 7.5" and I WOULDN'T go any wider - the car would be floating on too much extra sidewall sticking out. 225 max for 7.5" Bump for old thread. Is 235/45/17 on 7.5" really bad idea? I'd like both extra contact path plus bit of extra sidewall height. In a stiff tire like RE050A PP I'd hope it could be okay. Or I should play it safe and stick to 225/45/17 on 7.5"? The specs say it's acceptable combo: http://www.tirerack.com/tires/Spec.jsp?make=Bridgestone&model=Potenza+RE050A+Pole+Position&tirePageLocQty= Link to comment Share on other sites More sharing options...
Guest Posted August 26, 2008 Share Posted August 26, 2008 my choice would be a 225 wide on a 8" wide for overall lateral control.. a 245 and a 255 with a 9" or 8.5" would be the better choice IMO. Bumping old thread... For new set of rubber I was set on going with 225/45/17 on 7.5" rim (STI BBS). But I am now wondering if 245/40/17 on 8" rim would be a better choice (especially that I could get 17x8 +53 offset wheel, which could spare me fender rolling, I have coilovers so inboard clearance should not be an issue). Of course better might mean different things.... Car is primarily street driven, occasional autox or hdpe event. I'd like to get more lateral traction, but don't like the acceleration penalty involved with a heavier wheel.... the tires in question are Dunlop Z1 Star Specs. Advice? Thx! Link to comment Share on other sites More sharing options...
PGT Posted August 26, 2008 Share Posted August 26, 2008 235/40/17 would be better. the 245/40 es tu grande Link to comment Share on other sites More sharing options...
Guest Posted August 26, 2008 Share Posted August 26, 2008 235/40/17 would be better. the 245/40 es tu grande The only downside is lower sidewall height than stock. I like the touch higher sidewall of 225/45/17 and 245/40/17 Link to comment Share on other sites More sharing options...
lawl Posted August 26, 2008 Share Posted August 26, 2008 i got 235/40/18 and they rubbed. unsure if it's an offset problem or what. i think 245/35/18 might be better although it's so incremental i'd think that if i had issues with 235/40 im gonna have the same issues with 245/35 i think the diameter difference is in millimeters car for sale. PM me! Link to comment Share on other sites More sharing options...
praedet Posted August 26, 2008 Share Posted August 26, 2008 I like my 245/40/17s... Link to comment Share on other sites More sharing options...
whitetiger Posted August 26, 2008 Share Posted August 26, 2008 Bumping old thread... For new set of rubber I was set on going with 225/45/17 on 7.5" rim (STI BBS). But I am now wondering if 245/40/17 on 8" rim would be a better choice (especially that I could get 17x8 +53 offset wheel, which could spare me fender rolling, I have coilovers so inboard clearance should not be an issue). Of course better might mean different things.... Car is primarily street driven, occasional autox or hdpe event. I'd like to get more lateral traction, but don't like the acceleration penalty involved with a heavier wheel.... the tires in question are Dunlop Z1 Star Specs. Advice? Thx! if you have coilovers then a 245/40/17 on a 8"wide is a great combo. this is what i run as my daily driver setup. Link to comment Share on other sites More sharing options...
Guest Posted August 27, 2008 Share Posted August 27, 2008 if you have coilovers then a 245/40/17 on a 8"wide is a great combo. this is what i run as my daily driver setup. AFAIR you were running 225/45/17 before, correct? Did you notice any downsides after the switch, particularlt decrease in steering responsivnes? Any sloppines? The last I guess depends on the tire. The thing is that 8" rim is the minimum size for 245/45/17 tire. OTOH, 7.5" rim is the middle size for 225/45/17. I like "stretched" tires... I believe it sharpens response and (to me) looks better. Link to comment Share on other sites More sharing options...
devobuzz Posted August 27, 2008 Share Posted August 27, 2008 Not sure how much this helps your decision but this is what a 235/40/17 on an 8" rim (+48)look's like. I'm running iON's on stock struts with Rota Torques in hyper silver. Link to comment Share on other sites More sharing options...
Guest Posted August 27, 2008 Share Posted August 27, 2008 Nice. Perhaps indeed 235/40/17 is not a bad size.... Link to comment Share on other sites More sharing options...
whitetiger Posted August 27, 2008 Share Posted August 27, 2008 AFAIR you were running 225/45/17 before, correct? Did you notice any downsides after the switch, particularlt decrease in steering responsivnes? Any sloppines? The last I guess depends on the tire. The thing is that 8" rim is the minimum size for 245/45/17 tire. OTOH, 7.5" rim is the middle size for 225/45/17. I like "stretched" tires... I believe it sharpens response and (to me) looks better. I havent run 225/45/17 in 3 years now. I have 8" wide oz ultralaggeras with 245/40/17 re-01r tires. this is the best street setup ive personally ever run. no downsides at all. tirewalls are vertical with no stretch or squeezed look. No sloppiness or steering numbness. but then again, IMO, that has more to do with tire side wall stiffness and compound. you will get alot more response from a good tire than from stretching a mediocre tire. thats why autoxers like to shoe horn the widest r-comp tire possible on to the stock rims in stock class. the stiffness of the sidewall and the stickiness of the compound override any slop that ther may be in the sidewall from squeezing a wide tire in a narrow rim. Link to comment Share on other sites More sharing options...
whitetiger Posted August 27, 2008 Share Posted August 27, 2008 Nice. Perhaps indeed 235/40/17 is not a bad size.... 235/40/17 is alittle to short of a side wall imo, if you are sticking with a 235 width, id go 235/45/17 to get some extra rubber between the rim and the road. Link to comment Share on other sites More sharing options...
Guest LGT-NY Posted August 27, 2008 Share Posted August 27, 2008 235/40/17 is alittle to short of a side wall imo, if you are sticking with a 235 width, id go 235/45/17 to get some extra rubber between the rim and the road. Thats for a 17x8 whel right Josh? Link to comment Share on other sites More sharing options...
Guest LGT-NY Posted August 27, 2008 Share Posted August 27, 2008 I was actually wondering this too. You think 235/40/18 would be too short of a sidewall or too thin of a width for an 18x8 wheel? Link to comment Share on other sites More sharing options...
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