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Old 02-09-2007, 06:07 AM   #1
Einherjar
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Default n00b question (spare tires)

For all the work I have done, I should totally know better. I just don't want to give some bad advice to a friend, so I am double checking.

He has a 03 WRX. He has 17' Prodrive P1 with 17/45/225. If he got a flat can he use his stock 16' rims with stock tires (I can't remember the tire size)?

Naturally I would he would only use the "spare" to get the car to a service station. Or should he be looking into getting a 17 inch spare?

I just don't want to pooch his AWD. I did watch an idiot run fatter rear tires on his STi (which was a show car).

Thanks in advance!

-John
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Old 02-09-2007, 07:05 AM   #2
silver2004impreza
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As long as the overall diameter of the tires are the same, or at least very close, he should be fine. Just tell him to drive like a little old lady to the service station and to get all 4 tires back to matching as soon as possible.

If I were him, I'd find myself a cheap 17" wheel with a tire that was the same size as what's on the car and make that my spare, but I don't know what kind of financial situation he's in.
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Old 02-10-2007, 03:53 AM   #3
flukewrx
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Why spend money for a Spare Rim & Tire? Honestly he would probably be better off putting aside some money for a Towing Service (AAA or whatever) and be done with it. IF the car needs to ever be taken somewhere that would be cheaper than buying just about any 17 in rim & tire and keeping that as a spare.
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Old 02-10-2007, 08:57 AM   #4
Crawdads
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If its done right, when you increase wheel size, you decrease tire size...thereby keeping near the same diameter.

That being said, even if you do it perfectly, its not going to be the same size exactly...mostly because of the nature of tire sizing.

It should be close enough to drive the car a short distance to get a flat fixed.
(Subaru says that driving on different circumference tires will damage the diff....but very short term should have little to no adverse affects.)
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Old 02-10-2007, 12:36 PM   #5
dedgley
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Quote:
Originally Posted by Crawdads View Post
If its done right, when you increase wheel size, you decrease tire size...thereby keeping near the same diameter.

That being said, even if you do it perfectly, its not going to be the same size exactly...mostly because of the nature of tire sizing.

It should be close enough to drive the car a short distance to get a flat fixed.
(Subaru says that driving on different circumference tires will damage the diff....but very short term should have little to no adverse affects.)
Seems like it would be WAAAAY closer than that pixie spare tire that comes with your car. I ditched mine for a full size after having to use it once. Only drawback is decreased trunk space.

David
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