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Originally Posted by StarsnBars
Morin all, Great spring day here in the midwest.  I upgraded my tires to 35's except for the spare. Its a 33. Question,,, Will a smaller tire hurt my driveline if I get a flat ?? It would be short term till I could get the flat fixed. My service rep at the Hummer dealership said it wouldnt be a problem as long as I kept the speeds down and got the flat fixed ASAP.. Getting ready for our yearly fishing trip and trying to decide if I need to spring for a new 35 for my spare. Really dont want to spend the 200$ for a spare, but messing up my drive train fer sure isnt a option. So any helpful input would be nice. Thanks.. |
I've heard different things from different people on this subject. I used to have an XJ w/33" and used the stock 28" spare a couple times. I always used the spare in the rear (because your steering goes wacko w/two different sized tires on the front). And NEVER use the locker - you'll either get non-stop tire chirp or worse mangle your rear dif. I don't know what the FT 4WD will do w/a different tire, but I can't imagine in an emergency situation it would kill you.
Why not also carry around a simple tire fix kit. They are $5 at wallyworld and if you have an air compressor you can fix most flats on the trail in no time at all.