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Thread: New Tires...Old Spare
01-26-2011, 05:40 AM #1
New Tires...Old Spare
I expect my factory P245/70R-17 tires to need replacing within the next year, and I'm entertaining the idea of getting a slightly larger tire (the Hankooks here). Would I be able to keep and use the original spare even though it's slightly smaller? I know I shouldnt' mix tire sizes, but if it's for "limited use only", I could save some serious $$ by not buying a 5th tire.
2009 GMC Sierra 1500 WT with ... DU-HA underseat storage ; BAKFLIP G2 bed cover ;
Rostra Cruise Control
01-26-2011, 07:43 PM #2
Nobody knows if that small difference in tire size will be an issue?
01-26-2011, 08:36 PM #3
I can't see why it would be a problem,you see cars with those donut spares on all the time.As long as you fix your tire quick ,i'm sure it's not going to do any damage to your truck.[/SIGPIC]2009 Chevy Silverado LT 1500 EXT CAB 4X4 Vortec 4.8L SFI,K&N air filter,Weathertech Floor Liners ,Weathertech Stone/Bug Deflector, Line X Spray On Bedliner, TruXport Rollup Tonneau Cover, Molded Mudguards, Viper 5701 LE 2 way Security Alarm/Remote Starter, Xm Satelite Radio,BILSTEIN 5100 rear shocks,BILSTEIN 5100 front levelling shocks,READYLIFT 2" rear lift blocks,Goodyear Wrangler Territorys -265/70R 17"
01-26-2011, 09:07 PM #4
If your truck has a rear locker than you can't mix the rear tires as they would be rotating at differant speeds. My '05 has a locker and when I got a flat tire I moved the right front to the rear and put the spare on the front (pain in the ass).
01-27-2011, 05:15 AM #5
I don't know if I do or not. What would happen if I did?
01-27-2011, 09:44 AM #6
You could tear up the rear end because the rear is locked and the smaller tire is wanting to turn faster than the taller tire.
01-27-2011, 10:14 AM #7
as long as you run the spare on the front and dont put it into 4 wheel drive you will be fine. if you have a locker in the rear and run two different size tires you could brake a axel
01-27-2011, 06:57 PM #8
Well I don't want to break anything! I'll keep them all the same when the time comes.
Thank you all.
01-27-2011, 07:48 PM #9
When you buy your new tires buy a CHEAP tire for the spare, the same size as the others.
01-27-2011, 09:54 PM #10
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