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should i match all 4 tires size?

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Old 02-16-2003, 10:32 AM
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Default should i match all 4 tires size?

i have 2.8 Q 1999
some of you guys have wider tires in the back.don't you?
should i just get all same size of tires or i can put wider one in the back?
for my 16 wineglass 225 55 16 is okie? or 215 55 16 is max?
thanks guys
Old 02-16-2003, 10:41 AM
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Default Re: should i match all 4 tires size?

wider tires in back will give you more understeer.The last thing you want.
Old 02-16-2003, 10:42 AM
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Default 225/55 is also taller than 215/55...not recommended...

wide isn't overly important but rolling diameter is critical...must be "exact"...or as close to exact as reasonable.
Old 02-16-2003, 10:42 AM
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Default You want the sidewall and wheel lip to be vertical/in-line with each other

for the best handling characteristics. Remember that if the tire has to angle inwards to meet the rim, you have more play in the sidewall. That means less precise handling.

Your overall rolling diameter should not vary more than 3% front to rear, or the Torsen may be damaged.

Better to spend your money buying the best tires you can for your intended use, and not buy a lower grade tire, just to fit into a budget for wider tires.
Old 02-16-2003, 11:40 AM
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Default Funny how true sportscars have wider tires in back! I would recommend this on a Viper or Vette, but

not a A6.
Old 02-16-2003, 01:01 PM
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Default Actually, for best performance, you would put the wider tires in front on a quattro!

Really. MTM did this on their RSR S2 a few years back. It makes the handling more neutral, offsetting the forward weight bias that quattros have.

You definitely DO NOT want the wider tires in back. It will make the car understeer even worse than it already does. The reason RWD cars put wider tires in back is to maximize traction. Quattros don't have problems putting the power to the ground, so all four tires can be the same size.

With an ideal AWD car with a 50/50 wieght bias, all four tires are the same size.

With a quattro, you MUST make sure the diameter of all four tires is the same. Width can vary, but not the diameter.
Old 02-16-2003, 01:52 PM
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Naa, three's close enough
Old 02-16-2003, 02:34 PM
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i had 275 rears on my '94 RX7, and 235 fronts. loved the handling...miss the car.
Old 02-16-2003, 03:19 PM
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Default Re: should i match all 4 tires size?

on a quattro all 4 tyres should be the same size and tread pattern so you dont damage the centre diff. Its in the manual.
Old 02-16-2003, 03:26 PM
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Match em all, same size same pattern.


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