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Wider tires = more grip?

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Old 11-03-2010, 04:24 PM
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Just wondering, where are you getting this info from. I'm trying to read it, but the continuous use of "tyre" is giving a headache. Does not compute.

Something isn't right about what I have read so far. Might be a translation error from British english to american english.

But I am pretty sure tires are triangular?
Old 11-03-2010, 05:57 PM
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Here is the source:

http://autospeed.com/cms/title_Tyres-Grip-...15/article.html
Old 11-04-2010, 09:57 AM
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Originally Posted by alSpeed2k,Nov 3 2010, 11:20 AM
Please elaborate!
Car is quicker and handles better, better steering response, less bumpy and stays planted even on some of our crappy roads, less unsprung weight for sure, no more rubbing under full load. Lower centre of gravity and increased grip but more than that it is more predictable when it will break loose now and more gradual. I should add that when my suspension was stock moving up to the larger size felt better but my car sits on kwvar3 now and its a whole new ball game.
Old 11-04-2010, 10:59 AM
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Originally Posted by DDonovan,Nov 3 2010, 10:54 AM
I have wondered about this. Thanks Clement. I have been told to keep my tires around 32psi but the tires themselves say 42psi..., do we go with what the tire says or is there an ideal setting for the weight of our cars? (32psi)
Did some research and it seems to be that you should go by the recommended inflation rates listed on the panel and in the owners manual (32psi). This can go up a bit in the cold to 34psi.

The psi on the tire is as Alex says a Max inflation. It is also recommened to play with the tire pressure starting at 32psi. They recomment putting a chalk line across the width of the tire and driving to see where the wear is, however with the camber that we have I don't think it will work too well.
Old 11-04-2010, 12:04 PM
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42 psi would be like riding with Fred Flinstone> there is a formula that you can use to figure out the correct tire pressure based on weight of the car, weight rating of the tire and the max infalation of the tire that works well. Ill see if I can find it later. If you have a pretty stock camber the chalk test should help too
Old 11-06-2010, 12:20 AM
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Originally Posted by praisedprod,Nov 4 2010, 09:57 AM
Car is quicker and handles better, better steering response, less bumpy and stays planted even on some of our crappy roads, less unsprung weight for sure, no more rubbing under full load. Lower centre of gravity and increased grip but more than that it is more predictable when it will break loose now and more gradual. I should add that when my suspension was stock moving up to the larger size felt better but my car sits on kwvar3 now and its a whole new ball game.
So, you like the stock size or the 225/255 size with the stock suspension?
Old 11-06-2010, 09:11 AM
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I preferred the larger size when the car was stock height. Seemed to kill some of the body roll and understeer but that may have been something to do with them being on my volk wheels that are a bit wider but the same offsets.
Old 11-08-2010, 01:21 PM
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That was interesting and useful information.

Thanks lookinco / Clement
Old 11-08-2010, 01:34 PM
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Originally Posted by lookinco,Nov 3 2010, 01:52 PM
"... I started off with RE-01R in 225 / 255... then switched to RE-11 255 All around... Now I have Starspec 245 / 265..."
Hey Clement, (et. al. if others would like to share your experiences), what would you say caused the main differences in the various performance impressions you observed - the different tires or the different brands or both, or other?...
Old 11-08-2010, 01:37 PM
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High margin of error butt dyno's?

Butt dyno'd before and after christmas dinner?


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