10:07 pm
January 12, 2007
Offline
The tire I just ruined is under warranty. So, I went to Good Year figuring I could just warranty it for the new MTR in a 17" rim size and use it for a spare until I can afford to replace all 4. (since they don't make the 15" size any more) The "Sales Manager" told me it would mess up my drive train to run a 37-12.50x15 on one side and a 37-12.5x17 on the other. We argued for a good 5 minutes because he couldn't physically/mechanically tell me how it would ruin it except for he said one would spin faster than the other due to the rim difference. Isn't a 37" tire a 37" tire no matter what the rim size? (not counting differences in brands or style or wear)? Once you mount the tire to the rim, it becomes "one". So it shouldn't matter what's in the middle as long as the outside diameter is the same. (give or take an inch).
Am I missing something? Can someone please explain it?
And....he didn't even order me the tire! 😡 He said he is going to try to find me an old style replacement. I told him good luck and walked out.
12:07 am
May 4, 2004
Offline Doesn't make much sense to me.
Is your warranty with America's Tire? I once had them replace a 33" tire for me with a 35" tire. I had to pay a little difference in price but they didn't care what size tire I wanted.
12:17 am
January 12, 2007
Offline I was at Good Year in Rocklin. I think once I get this worked out, I'm done doing business with them.
1:56 am
Sounds like a fight, call out the Posse....
Strange as it might sound the BFG T/A KO 37/12.5/17 is only 36" and the 37/12.5/18 is 36.6".
3:06 am
January 12, 2007
Offline I know that tire sizes vary, and I know that the Kevlar MTR's run a little bigger than the old style but, that's not the point. This guy was adamant that it's the wheel size that would mess me up. I would bet that all 4 tires on my Jeep right now vary within a half inch. Maybe that's whats messing up my drive train....it's not my heavy foot. 
3:19 am
Club Member
July 10, 2003
Offline I think the guy knows nothing about tires. Which is sad for a tire shop
Every time I go in there, I know more about tires than they do. They are getting to be like Reibes or Central 4 Wheel Drive...they can't figure anything out unless they can punch a number in to a computer 
Try buying parts for a Jeep at either of those stores without a model number or if the part isn't stock.
I used to wheel a lot. . .
3:44 am
Might not mess up the drive line but it doesnt sound too safe. like mixing radials and biasply
4:03 am
I would take the tire and and use it for a spare. The new mtr's seem to be taller and wider. I had to re-do my bumps and go to a wider rim to run them without problems. Had to re-gear also.
3:08 pm
Club President
April 2, 2003
Offline Assuming the two tires have the exact same static ride height, the rotation would be identical.
Even if they were off slightly, running axles open, and the tire on the rear, your open diff could compensate for it.
Just my thoughts...
5:00 pm
I agree. As long as the total height of both tires is the same rim should make no difference at all. Sounds like you are dealing with a complete idiot.
11:45 pm
I think they would be different although I don't think it would be enough to matter. Technically the weight is in a different place. Think of it kind of like this example:
http://www.theorphys.science.ru.nl/peop ... ndex.shtml
I can't figure out how it would matter though.
4:37 am
"Bender" wrote: I think they would be different although I don't think it would be enough to matter. Technically the weight is in a different place. Think of it kind of like this example:
http://www.theorphys.science.ru.nl/peop ... ndex.shtml
I can't figure out how it would matter though.
Don't try to figure this one out buddy, you'll hurt yourself.
1 Guest(s)
