tire expert needed.
Thread Starter
Melting Slicks
Joined: Apr 2004
Posts: 2,773
Likes: 138
From: cyberspace NY
tire expert needed.
My truck developed a shimmy in the steering wheel at 40 mph. very pronounced. Found a 1" drywall screw in the front tire. nothing big, just a standard drywall screw. went to tire shop, patched tire from inside, and I watched him balance it perfectly.
drive truck, same shimmy at 40 mph !!
went back to tire shop, rebalance all 4 tires, all balance perfect. 0/0 on re-check.
still same shimmy at 40mph, and this is after I watch them balance all 4 tires perfectly. so now I have 4 balanced tires with a nasty shimmy.
So I decide to rotate repaired tire to the rear, SHIMMY GONE !!
So the cause of the shimmy was the tire with the drywall screw that got repaired properly.
so my guess is the 1" dry wall screw cut a steel belt inside the tire. (even though it balanced ok)
and it caused a shimmy. is this possible?
what else could have happened ?????
I'm still running the tire, but it is on the rear, where I can't feel it.
drive truck, same shimmy at 40 mph !!
went back to tire shop, rebalance all 4 tires, all balance perfect. 0/0 on re-check.
still same shimmy at 40mph, and this is after I watch them balance all 4 tires perfectly. so now I have 4 balanced tires with a nasty shimmy.
So I decide to rotate repaired tire to the rear, SHIMMY GONE !!
So the cause of the shimmy was the tire with the drywall screw that got repaired properly.
so my guess is the 1" dry wall screw cut a steel belt inside the tire. (even though it balanced ok)
and it caused a shimmy. is this possible?
what else could have happened ?????
I'm still running the tire, but it is on the rear, where I can't feel it.
Pro
Joined: Feb 2007
Posts: 608
Likes: 70
From: Richmond, VA
It's possible that the puncture damaged the structure of the tire. This is noticable when the tire is on the balancer, but the tech would have to be looking for it. Most standard balancers won't pick up an out of round tire, they just measure the inbalance.
Some higher end balancers, such as road force balancers and such WILL detect those problems, but not many tire dealers use them(although I think they should).
Anyhow, what kind of tire is it that's giving you problems? Any idea of the age? Most manufactures will waranty against those problems.
Some higher end balancers, such as road force balancers and such WILL detect those problems, but not many tire dealers use them(although I think they should).
Anyhow, what kind of tire is it that's giving you problems? Any idea of the age? Most manufactures will waranty against those problems.
Former Vendor
Joined: May 2000
Posts: 4,776
Likes: 147
From: 877-522-8473 ext. 4362
St. Jude Donor '11-'12
a road force variation balancer would be able to determine what the problem is, if it is wheel/tire related. If the tire was run low it could have internal damage which could be the root cause of your vibration
