- Weird Car Tyre/Wheel Problem
Just changed wheels on my wife’s car over to the winter set we bought last year. These were new Alloy wheels and winter tyres. Maybe did about 4500 miles with no issues before putting summer ones back on.Posted 2 months ago
Now we are back on the winter set, there’s a clear vibration that wasnt there before. More evident above 50mph, but worse when coasting and less obvious when under power. Tyres are directional and are all on the right way round. I’ve checked wheels are properly seated and all wheel bolts properly tightened. Tyres aren’t unevenly worn in any way, and pressures are correct.
Only thing I can think of is one or more of them need rebalanced. The little weights are stuck on and while I can’t see any missing spaces where one might have fallen off, I suppose it is possible.
Anyone got any bright ideas? Should I just take to a garage and get wheels rebalanced?
Car is a Merc GLC, tyres are Nanking Snow SV2VaderMember
Check they are still round, I had a tyre recently go out of shape with a bulge in the tread area that gave similar symptoms to yours. It took me ages to find as I was checking sidewalls, balancing weights etc but all were fine. Eventually I ran my hands around the tread areas and found the problem. Was worse at speed (nothing around 30) and went if the car was loaded and lessened under acceleration. The tyre was otherwise in fair condition with plenty of treadPosted 2 months agospooky_b329Subscriber
Are the centre spigots the correct size on the ‘new’ wheels and did you tighten the bolts in the correct pattern i.e. 1 – 3 – 5 – 2 – 4.
Also I don’t think its common but if the garage don’t let the tyre completely deflate after popping the bead on and balancing the wheel, the bead may not be even. As you’ve stored them at lower pressure the bead may have relaxed into the wheel lip and put the balance out.Posted 2 months agobsimsMember
The instructions I was given were to rotate if stacked so as to not damage the bottom sidewall on the floor – think weight and cold rough concrete. Also reduce pressure as unweighted tyres with higher pressure suffer ply damage in the side walls. It was 8 years ago I first got mine so I could have remembered those points wrong.
Most likely rebalance will solve the issue.
Edit . What spooky says makes sense. Maybe they said increase the pressure by half 8 years ago. I have followed those instructions and never had a problem.
A quick google says pressure should be lowered to prevent uneven pressure on the unfitted wheel causing distortion.Posted 2 months ago
Hmmm, the spigots are different, but I have spacers and these are fitted fine, in any case, they were on before with no issues. Nuts tightened up in correct sequence. I have not however reduced pressure or changed storage with rotation. I’m resigned to getting them balanced again on Monday.
I stored my own wheels in exactly the same way, swapped them over at same time, and mine are fine. So it’s not all bad!
I’ll assume Stan’s comment is a joke.. 😊Posted 2 months agoGreybeardSubscriber
I don’t know how much difference it makes, if any, but I try to always put the locking nut in the same position on the wheel, on the basis that it was originally balanced like that. It is heavier than the standard nuts, but being so close to the hub may make that irrelevant.Posted 2 months agospooky_b329Subscriber
Iveco recommend the gold standard of wheel balancing, there is a machine that does the balancing on the vehicle so the wheel weights also balance the hub and brake disc. Presumably this is why my hubs have extra pins so you can only fit the wheels in the correct orientation.Posted 2 months ago
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