27 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHNew tire balance issue?
Leading reported evidence
Check lug bolt torque at each wheel, most required some
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
Checked the lug bolt torque at each wheel, most required some tightening to achieve spec.
Leading evidence: 'Check lug bolt torque at each wheel, most required some' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'manufacturing flaw, as the wheel is true, no issues' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Adjust runout' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed · Original poster
Got home and checked the tires for any impacted items (screws etc), none found.
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Suggestion
They are supposed to rotate the tire on the rim for best balance, as well as adjusting for runout
manufacturing flaw, as the wheel is true, no issues
Suggestion or failed attempt
No successful repair reported for this finding.
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Identified cause
1
Suspected cause
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Discussions that suspect a cause
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Suspected cause · Original poster
Probably a manufacturing flaw, as the wheel is true, no issues with respect to being out of round or deformed laterally.
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Suggestion
just because you had them balanced on a rf machine doesnt mean they did anything but balance, if they didnt use any of the road force features to center the wheel, index the tire, check for runout, look at the wheel for bends, then you just got a balance job.
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Suggestion
just because you had them balanced on a rf machine doesnt mean they did anything but balance, if they didnt use any of the road force features to center the wheel, index the tire, check for runout, look at the wheel for bends, then you just got a balance job.
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27 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T091943Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
After inheriting a worn set of 7 year old PS2s last spring from the previous owner, I decided to treat the car to a new set over the weekend. Ordered them from Tire Rack, installed at one of their preferred shops and had the tires road force balanced.
Took the car out for a test drive that afternoon and noticed a unbalanced feel between 65-85mph. Got home and checked the tires for any impacted items (screws etc), none found.
Checked the lug bolt torque at each wheel, most required some tightening to achieve spec. torque. Checked tire pressures at each wheel (cold). Set to ~2psi below gas door spec.
Curious what other items could cause this unbalanced feeing before I have installer road force balance the tires again this week.
Appreciate any input!
Balance is balance. If it is off then it will cause a vibration. Some tires are notoriously difficult to balance. And remember, they are balancing the whole wheel/tire assembly. I know the tire shops just love to throw the tires on the wheel and balance them, sometimes putting on really heavy weights to compensate. If you have a wheel/tire assembly that requires too much weight to balance, the correct method is to deflate the tire, break the bead and rotate the tire on the wheel to achieve a better balance. It takes time to do that but it works much better. Also seen instances where they did not put the wheel weights on right and they fell right off on the first road trip. Looks like you are headed back to the tire shop.
That is exactly what you pay for with Road Force balance. They are supposed to rotate the tire on the rim for best balance, as well as adjusting for runout
If you have a vibration, take it back and have them rebalance
I made TireRack's "preferred" installer try three times over two days to get the balance right - and then I told them all to go to hell and went back to my favorite (capable) tire shop, where they nailed it on the first try.
It turns out that at least SOME of TireRack's preferred installers do not have equipment suitable for mounting and balancing tires as wide as some 911's run in the back. So you wind up with a terrible balance. Their manager told me that my tires were over their "limit" - but of course he didn't tell me this until I'd wasted hours and hours going back and forth in frustration.
if you bought michelins they should be really good. they shouldnt require much weight. just because you had them balanced on a rf machine doesnt mean they did anything but balance, if they didnt use any of the road force features to center the wheel, index the tire, check for runout, look at the wheel for bends, then you just got a balance job. And it could be within tolerance for balance but still have bad vibrations for other reasons. Thats why they developed a rf machine, to diagnosis those kinds of problems. Now if you return with a complaint, they would have to use all those features to find out what the problem is. IF they know how to do it.
Also most tires come with a painted dot usually red. this goes in line with the valve stem. or a yellow dot that goes opposite valve stem.
Yea you think this is hard? try getting a 914 wheel balanced . Lug centric vs hub centric. There is a tool adapter the tech needs to use, last time I had to pint out the tool hanging on the side of the machine and explain what it is for.
1st thing I would do is loosen all the lug bolts & insure wheels are properly seated & torqued. Check for corroson on mounting flange & wheel.
If you bought Michelin tires then assume you have a problem wheel.
cause they are the most expensive there is and claim to be the best in the world, so they at least should balance better. A $600 tire usually does balance better than a $200 tire.
Thanks for all the replies, lots of good information to take back to the tire shop in the morning.
Plan B if this "preferred" installer can't get it right is to go to my indy mech and have his guy do a proper balancing.
FYI, this same shop balanced my old set of PS2s and the improvement was noteworthy, so I'm willing to give him another shot before going up the chain to TireRack for satisfaction (I'm sure it will be a treat).
I'll be on the shop floor to look into their road force process and to see if it aligns to what has been described and do a bit of homework on their equipment.
Updates to follow, thanks everyone!
Quick update:
The tire shop called telling me to bring the car in tomorrow when the manager is on duty. They openly admitted that the tech who tried to balance the new set of PS2s did not know how to properly perform a road force balance and they want to earn my business back.
What a refreshing phone call, doesn't happen much these days, but I certainly appreciate their honesty.
Fingers crossed for a good outcome!
That is good news.
It really pisses me off when I hear of untrained techs doing stuff and screwing up. I got 4 scratched wheels from one that mounted new tires at one shop who did not know how to use the machine.
Hopefully the manager will get it sorted out for you.
I hear ya, the biggest thing that pisses me off is damaged wheels due to sloppy techs who don't give 2 shifts about your car.
Ironically, my Turbo Twist IIs need refinishing after 11 years and I'm waiting until all of this is fixed before I have them refinished
Quick update: Took the car in for another road force balance today and the front right tire indicated 36lb, could not be lowered, while the others measured 10, 6 and 11lb of road force (weight). Contacted TireRack and they are exchanging a new one, at no cost, to the installer.
Probably a manufacturing flaw, as the wheel is true, no issues with respect to being out of round or deformed laterally.
Hats off to TireRack for an easy exchange no questions asked!
So the whole story about the stupid tech was a load of crap, and they threw the guy under the bus when it actually turns out that a tire was bad?
I had no problems with TireRack, but I will never buy from them again due to the whole "preferred installer" crap. Fool me once, shame on you...but not twice.
Good luck with the swap!
Exactly my feelings when I left the shop, the guy probably got his *** chewed for screwing up when it wasn't his fault to begin with.
I'll have my next set drop shipped at the house and have my indy take care of the rest, lesson learned.
[QUOTE=5CHN3LL;12634200]So the whole story about the stupid tech was a load of crap, and they threw the guy under the bus when it actually turns out that a tire was bad?
It ain't over til it's over!
I had no problems with TireRack, but I will never buy from them again due to the whole "preferred installer" crap. Fool me once, shame on you...but not twice.
I have been searching for a good tire installer since I moved to O.C 8 years ago. Seems all the OC TireRack approved places charge too much for the priviledge of their service.
New tire arrived today, less than 24 hours from ordered, Amazon like efficiency.
Tire balanced properly (5lb road force vs ~35lb on bad tire) and the bad sneaker is being picked up today by UPS.
Just proves the point that things made by humans will never be perfect, but damn it I thought Michelin was infallible.
Also, you don't have to ship to Tire Rack's preferred installer - I have tires shipped to my indie and he installs. Yes, local tire shop can meet prices - but $10 per hour tech is not the guy you want installing them on your porsche ...maybe OK for the Honda Civic ....or Nissan GTR
