Wheels and Tires
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Driver School Candidate
Joined: Apr 2001
Posts: 14
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From: Georgia
I want to uprgrade my stock 17' wheels. What is the largest tire I can put on there without rubbing. I tried some 18" Concept Neeper Haaz on 235/40ZR18 but I think the rim itself is too big. I got them from a guy who had a Q45. I am going to purchase "something" tomorrow and I want to make sure I don't get a rim that is too wide. I don't think all these wheel guys know what they are talking about.
Lexus Test Driver
Joined: Apr 2001
Posts: 1,483
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From: Pennsylvania
it really depends on how wide the rim is... I dont think you can go more than a 9 inch winde rim on the rear and 8 on the front.. so a 255/35 would be the biggest and even at that pushin it for the rear end... 235/40 up front or 235/35
Lexus Fanatic
Joined: Feb 2001
Posts: 5,445
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From: California
try this
www.volkracing.co.jp
click on several wheels you like, and there will 18"s fittment chart for the altezza. to be safe, 18*7.5 215/40/18, 8.5R 225/40/18
click on several wheels you like, and there will 18"s fittment chart for the altezza. to be safe, 18*7.5 215/40/18, 8.5R 225/40/18
Thread Starter
Driver School Candidate
Joined: Apr 2001
Posts: 14
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From: Georgia
Wheels and Tires
Thanks for the help folks!! I was glad to have people to talk to about this. Sometimes the rim shops will tell you anything. I ended up keeping the Concept Neeper Haaz 18x8.5. I had to change tire sizes on the back, that's where it rubbed. I put on some 215/35/18's all the way around. It doesn't rub, at least not so far but it sure fills the wheel well out nicely. I will have some pics coming soon!!
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Originally posted by fairuza11
I am suprised a 215/35 fit on a 8.5 rim....
I am suprised a 215/35 fit on a 8.5 rim....
Yeah but the wheels look ALOT WIDER than the tires. Maybe get some fenders and it'll look better. (Try WALD.)
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Moderator - Electronics Forum
Joined: Feb 2001
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From: Illinois
Ouch! Also, if the tire is sticking out of the wheelwell then the gravel, dirt, tar, (etc) spray will be much worse. Hate to think of a big ol rock being kicked out that far... yikes!
Percy
Percy
Lexus Fanatic
Joined: Feb 2001
Posts: 6,879
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From: Kaliforniastan
Yeah, the 215 is way to small for that width of a rim. If you're having rubbing issues, I'd look at the offset. If these came off a Q45, I can't image that the offset would be correct for a IS300 (but then again, it's probably a +40 which is just a "generic" standard offset which would work on a IS if the rim was 8" wide)
Also, a 8.5" in the front is obviously too large. A 8" or 7.5" would be the correct fit (8.5" in the rear with the correct offset would work perfectly) Hell, with the correct width and offset, you could have squeezed a 19" in there!
Also, a 8.5" in the front is obviously too large. A 8" or 7.5" would be the correct fit (8.5" in the rear with the correct offset would work perfectly) Hell, with the correct width and offset, you could have squeezed a 19" in there!
Last edited by Manaray; May 2, 2001 at 12:46 AM.
Thread Starter
Driver School Candidate
Joined: Apr 2001
Posts: 14
Likes: 0
From: Georgia
Thanks for all the info folks. I am looking for a set of 7.5 inch rims. For Now I will be putting the factory rims back on. I will be selling the concepts. I don't want to screw up anything. I'll be trying to do this in the next month or so. You guys really have some great info.
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