225/45/R17s or 235/40/R17s - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-20-2006, 03:43 PM   #31
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Merlin, don't go wider than 235 unless you buy wider rims. You'll get too much sidewall flex with 245'* on stock width wheels. Not so important for most of us, but you run on a road course regularly. 235'* may be stiffer than 245'* in your situation.
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Old 02-20-2006, 03:49 PM   #32
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Quote:
Originally Posted by Merlin 91/97
Quote:
Originally Posted by big_news_1
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Originally Posted by Merlin 91/97
You're also a G-body.......
???? G-Body? His sig says he'* an SLE?
I thought all 2000+ were G bodys....
H-Bodies
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Old 02-20-2006, 06:58 PM   #33
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They are LEGALLY H bodies but if you look closely, they have some G body design elements. That'* what fools most of us.
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Old 02-22-2006, 10:22 AM   #34
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New info....

I'm getting closer to ordering the tires and I just checked my rim size on my Enkei RS5s.... 7inches.... The 225s are able to be mounted on a range of tires including 7in, but the 235s are 7.5in (or 8in) and above.... so no 235s for me.

Thanks for everyone that helped
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Old 02-22-2006, 10:24 AM   #35
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Jason, you CAN put them on 7'*. It'* been done with success before.

I think Gordy is still on 7 inch rims with his 255'*. I may be mistaken.
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Old 02-22-2006, 10:34 AM   #36
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I don't think I'm going to risk it...
The 235s make for a wider tire... but a very small sidewall....
225*0.45=101.25
235*.40=94
.... compared to the 225*.55=123.75 I have on her now.
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Old 02-22-2006, 10:36 AM   #37
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Looks like some good info and choices Jason...

While I'm not much on changing tire sizes...never done it...

What in the heck is a Canadian doing measuring in inches?
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Old 02-22-2006, 10:38 AM   #38
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I'll be going to 235'* by winter. The only reason I stuck with 225'* is because narrower tires are better on the sand and salt.
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Old 02-22-2006, 01:22 PM   #39
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Quote:
Originally Posted by Merlin 91/97
I don't think I'm going to risk it...
The 235s make for a wider tire... but a very small sidewall....
225*0.45=101.25
235*.40=94
.... compared to the 225*.55=123.75 I have on her now.
When you're talking about doing AutoX or road courses, don't you want a short sidewall? I know it'* good to have a little more beef at the strip, but you want to minimize flex when cornering, no?
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Old 02-22-2006, 01:32 PM   #40
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Agreed.... but less sidewall = more bumpy ride... right?
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