maniaxzero Posted September 23, 2011 Share Posted September 23, 2011 I'm looking to buy new tires for my rims and I have a dilemma Currently running: Suspension: Stock Springs/shocks Rims: 18" Enkei CDR9 18x7" +40 offset Tires: Cooper Zeon 235/40/18 http://i.imgur.com/ZzGlV.jpg Looks really good. Very flush with the fender. It was rubbing in the back when loaded with passengers and it rubs during dips in the front. I've since rolled the front fender slightly and also took off the rubber strip in the back and rolled the back fenders. As they sit now, the back does not rub anymore and the fronts only rub when I hit a deep dip in the road. My tire tread is getting closed to 2/32" and I want to replace the tires before winter. I have three choices it seems. 1) 235/40/18- same as what I'm running now. With a set of new tires, I'm afraid the rubbing will get worst even with the rolled fenders 2)225/40/18- Recommended size by alot of ppl on this forum it seems but I live in New York City and it seems the sidewall is way too thin for NYC roads and potholes. 3) 225/45/18 - It seems like the most logical size for my use. However, it's going to be a much bigger tire than the stock size, I'm afraid of rubbing. What do you guys think? Link to comment Share on other sites More sharing options...
iNVAR Posted September 23, 2011 Share Posted September 23, 2011 225/45 seems way too big. You're gaining an entire an entire inch in diameter, and it's not even listed here as an option to consider: http://legacygt.com/forums/showthread.php/faq-offsets-sizes-rims-and-tires-gt-xenonk-version-4426.html According to a tire size calculator, you'd be off 5.5% on your speedometer. I drive into ghetto Brooklyn on a daily basis for work so I encounter some monstrous potholes too. I'm running stock 17x7 with 225/45 and I've hit some monster potholes while doing 20-30MPH and my rims haven't cracked/dented... yet. I also have a set of Volk CE28N in my garage that are 18x7.5 with 225/40. I had them on last summer and I didn't find that the ride suffered much from changing to them. I can't say I really hit any potholes as big as when I was on my stockers though, so I don't know how well they'd stand up to the roads. Are you worried about damage to your rims or you're worried about the ride being too rough? Link to comment Share on other sites More sharing options...
whitetiger Posted September 23, 2011 Share Posted September 23, 2011 with a 7" wide rim, id stick with a 225/40/18 tire. Link to comment Share on other sites More sharing options...
wpmarky Posted September 23, 2011 Share Posted September 23, 2011 ^^+1 Link to comment Share on other sites More sharing options...
iNVAR Posted September 23, 2011 Share Posted September 23, 2011 I don't even know how he's running 235 on 18x7 and it looks flush. 225 on 17x7 already looks too wide to me and not flush. Link to comment Share on other sites More sharing options...
silver04RS Posted September 24, 2011 Share Posted September 24, 2011 going to a 225/40 youd only loose a little sidewall the 40 is 40% of the first number Link to comment Share on other sites More sharing options...
mk6933 Posted September 24, 2011 Share Posted September 24, 2011 7" wide and 235s? I don't even want to go with 235s and I have a 7.5" wide rims. Link to comment Share on other sites More sharing options...
jaxx4k Posted September 30, 2011 Share Posted September 30, 2011 not to thread jack.. but the 18" im bout to get has 2 bad 215/45/18. think is wise to run 2 of 215/45/18 & 2 of 225/40/18?? Link to comment Share on other sites More sharing options...
maniaxzero Posted September 30, 2011 Author Share Posted September 30, 2011 going to a 225/40 youd only loose a little sidewall the 40 is 40% of the first number 235 x .4= 94 225 x .4= 90 4mm difference is alot of nyc potholes. Even with the current 235/40, i feel the sidewall is already too thin Link to comment Share on other sites More sharing options...
maniaxzero Posted September 30, 2011 Author Share Posted September 30, 2011 not to thread jack.. but the 18" im bout to get has 2 bad 215/45/18. think is wise to run 2 of 215/45/18 & 2 of 225/40/18?? absolutely not. The subaru has a Symmetrical AWD system. Running different size tires can damage the drivetrain http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=18 Link to comment Share on other sites More sharing options...
maniaxzero Posted September 30, 2011 Author Share Posted September 30, 2011 7" wide and 235s? I don't even want to go with 235s and I have a 7.5" wide rims. http://i.imgur.com/UwTHT.jpg 18x7J means its 7" wide right? Link to comment Share on other sites More sharing options...
jaxx4k Posted September 30, 2011 Share Posted September 30, 2011 absolutely not. The subaru has a Symmetrical AWD system. Running different size tires can damage the drivetrain http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=18 see good thing I ask.. lol 18x7J means its 7" wide right? Yes 7 mean wide.. =) guess I will either get 4 tires @ 225/40 or replace 2 215/45. thanks. Link to comment Share on other sites More sharing options...
iNVAR Posted September 30, 2011 Share Posted September 30, 2011 guess I will either get 4 tires @ 225/40 or replace 2 215/45. thanks. again, like the guy said, the tires have to be in the same circumference. being that the tires were used, you have to do 1 of 3 things: 1) shave the new tires so the circumference is the same 2) replace all 4 3) do nothing, IF the circumferences are within spec. do NOT get a tire of a different brand/model. they'll 1) wear differently 2) be a different size even though they both might say 215/45 Link to comment Share on other sites More sharing options...
mk6933 Posted September 30, 2011 Share Posted September 30, 2011 225/45-18 will be a better choice Link to comment Share on other sites More sharing options...
2010Legacy Posted September 30, 2011 Share Posted September 30, 2011 I think your ideal choice would be 225/40/18. I just picked up 18x8 with Tire spec: 235/45/18 but my body is 5th gen, so i picked 45 to fill those wheelwells. Also stock GT 18" comes with 45 side wall. -my .02 cents Link to comment Share on other sites More sharing options...
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