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Selling the 20's, what size rubber 4 18's ???

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Old 02-26-05, 06:23 AM
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Cypress
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Default Selling the 20's, what size rubber 4 18's ???

Yes the 20's look great but the ride isn't to my liking too much. Gonna switch to 18's with thicker rubber. I wanna go with something like 245/45-18 front and 265-275/45-18 rear. This might make the rear tires slightly thicker but the overall outside diameter shouldn't be too much. Putting on some l tuned springs and shocks soon too.
Old 02-26-05, 09:18 AM
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Motu1
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You will probably want to go

front 235/18/40

rear 265/18/35

if you go wider in the rear 275 you might have to go to a 30 series but I am not 100% on that. I know for 19's in the rear you do.
Old 02-26-05, 09:58 AM
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LextacyGS4
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Its a 30:-5 widthrofile ratio, so if you want a staggered setup with 245/45/18 up front then to even them out you go with 275/40/18. Those wheels will be almost perfectly similar in diameter and of course same height profile.

Basically it works like this, width in MM/ % of width/ size of wheel, just plug in the #s
Old 02-26-05, 10:33 AM
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Mr Johnson
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Well most that I'm aware of, including myself, who are on 18s run with 245/40 on the front and 275/35 on the rear.
Old 02-26-05, 11:55 AM
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The ideal size for a staggered 18s setup is 245/40 front and 275/35 rear. The outside diameter of this setup is the same as the OEM 16s with the 225/55 tires.

Since you had 20s and know about the rubbing issues that come with them, 245/45 and 275/40 would have the same issues. This will give you more rubber which will translate to a better ride while taking a bit of a hit in handling. At this size, the sidewalls are not as stiff as the low profile performance tires, and thus better ride, less handling. More rubber also gives the car a less aggressive look, but this is personal taste.
Old 02-28-05, 01:15 AM
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rominl
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Originally Posted by Neo
The ideal size for a staggered 18s setup is 245/40 front and 275/35 rear. The outside diameter of this setup is the same as the OEM 16s with the 225/55 tires.

Since you had 20s and know about the rubbing issues that come with them, 245/45 and 275/40 would have the same issues. This will give you more rubber which will translate to a better ride while taking a bit of a hit in handling. At this size, the sidewalls are not as stiff as the low profile performance tires, and thus better ride, less handling. More rubber also gives the car a less aggressive look, but this is personal taste.
neo is correct. 245 and 275 are better tire setup
Old 02-28-05, 03:01 PM
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redgs4
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Originally Posted by rominl
neo is correct. 245 and 275 are better tire setup
Yep - it's what I'm running now on my 8.5/9.5 18's.
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