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> 18 inch rims Bad idea?, For my step moms camaro
importhunter
post Jul 31 2005, 09:39 AM
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I went w/ her to order her some rims for her 98. I read on here that 17's are a really good choice, however, she wanted chrome "twisted 5 star" rims. The place we went to didn't have any that would fit. So she picked out a set and they are 18 X 8 Or 9 I cant remember. The tire size is P245/40/r18s (Z rated). I know most (or all) are against these rims but I just want to know how bad this will hurt street performance?

Since the overall diameter will be the same as stock will I need to upgrade the brakes (or brake pads)?

I am thinking of maybe pushing them out 1/4 of an inch. Would this be too much?

I think I can still drop the car in inch (maybe an inch and a half) good idea? (IMG:http://www.frrax.com/rrforum/style_emoticons/default/huh.gif)
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John_D.
post Jul 31 2005, 03:43 PM
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This set of questions is really more of a "street and appearance" kind of thread, than a road racing or autocross topic... So you probably won't find a lot of feedback here. With that said, here's a little info for you:

For street "performance", your stepmom probably won't notice a difference with 18's. A shorter sidewall makes it harder to put the power down quickly (depending on the power level and what your stepmom wants out of the car).

The shorter sidewall will "firm up" the street handling a bit.

And a shorter sidewall will make the small bumps and thumps more noticeable, because the sidewall normally takes up those a bit before the springs/shocks come into play.

You're right that if the overall diameter is the same, there won't be any extra load on the brakes.

I'm running 18 x 9 245's with no problems on the street. 245 was the max size I could run in STS class (but the 9" wheels were actually 1" too wide....)

Can't really answer the question about "pushing them out a 1/4" without knowing how they sit in the fenderwells. But as far as street driving on street tires, I don't think it would make a handling difference one way or the other, so it's probably not worth the effort.

Dropping the car is good ("generally speaking") for lowering the center of gravity for handling improvements. Is this something your stepmom cares about though, getting that little bit of lowered cg for street driving? It's good for appearance too, but it starts to cause problems with getting in and out of sloped driveways, speed bumps, etc. for street use. The ride can become harsher because of hitting the bump stops more easily.

So, when are you going to get your car out to an autocross? (IMG:http://www.frrax.com/rrforum/style_emoticons/default/smile.gif)
(and then post up what you think about it!)
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Posts in this topic
importhunter   18 inch rims Bad idea?   Jul 31 2005, 09:39 AM
John_D.   This set of questions is really more of a "st...   Jul 31 2005, 03:43 PM
Cal   I have two fbodys, and I must have every tire and ...   Jul 31 2005, 07:09 PM
jensend   The shorter the sidewall (aspect ratio) the stiffe...   Aug 1 2005, 02:02 AM
pimpmaro   Cal, the one problem I've seen with the 16...   Aug 1 2005, 04:15 AM
Cal   QUOTE (pimpmaro @ Jul 31 2005, 22:15)Cal, the...   Aug 1 2005, 02:32 PM
robz71lm7   Moved, please keep street posts in the General Dis...   Aug 1 2005, 02:39 PM

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