I've been fighting a vehicle vibration I think I have narrowed down to a set of front tires(possibly rears too). It seems to happen when they warm up. This seems to be the opposite issue everyone has when they flat spot.
Long version below.
1/31/2020 - Got a new set of 4 - Bridgestone Dueler HL. Seemed to drive ok until Mid March when COVID happened and I stopped driving frequently. Got an alignment and they found a front strut leaking and replaced. I noticed more road noise than the OE Continentals I had but I didn't notice the vibration issues.
July I started driving a bit more and noticed this terrible vibration. I inspected the rear shocks and found they were leaking. I replaced and it helped a little. Then found the remaining old front strut leaking and replaced. I was expecting this to be the nail in the coffin but it was not.
This week we got a slight cold front in Texas and the issue started to go away except when I drove for 45-60 minutes. I started to correlate it with tire psi and temp. Cold pressure on them is 35psi and I noticed the issue as each tire got up to 38 psi. One day I pulled over and deflated one front tire that made it to 38 first down to 36 and it helped. Then as the other front tire made it to 38 I deflated it too and it helped for about 10 minutes.
My morning drives seem to be better but it seems to be a factor of the lower ambient temp (55-60F) versus old ambient of 80-90F in the morning.
Anyone seen anything like this?
I'm thinking I am either working out some flatspotting from not driving much from March until July or some of these tires have an issue as the front tire temps get up to the 120-130F and 38psi.
I had the dealer road force balance and rotate and when they moved the tires up front I developed a pull which was later diagnosed as a conic tire and replaced. Wondering if the other tire in the pair has some defect too. At this point though I've gone through two road force balances at two different places and two alignment checks as well as having two shops check suspension and other suspects. Tires only have 3k miles on them.
Ideas/suggestions? I plan on going back to the dealer when I have more information on how to reproduce the issue and anything I can think of since it happens less in the cold and takes longer to reproduce now.
I've also started doing the poor man's picoscope with a $10 vibration app on my phone and calculating manually but the numbers are all over the place, presumably because my phone is not mounted to the right part of the vehicle due to limitations of using a phone.
Long version below.
1/31/2020 - Got a new set of 4 - Bridgestone Dueler HL. Seemed to drive ok until Mid March when COVID happened and I stopped driving frequently. Got an alignment and they found a front strut leaking and replaced. I noticed more road noise than the OE Continentals I had but I didn't notice the vibration issues.
July I started driving a bit more and noticed this terrible vibration. I inspected the rear shocks and found they were leaking. I replaced and it helped a little. Then found the remaining old front strut leaking and replaced. I was expecting this to be the nail in the coffin but it was not.
This week we got a slight cold front in Texas and the issue started to go away except when I drove for 45-60 minutes. I started to correlate it with tire psi and temp. Cold pressure on them is 35psi and I noticed the issue as each tire got up to 38 psi. One day I pulled over and deflated one front tire that made it to 38 first down to 36 and it helped. Then as the other front tire made it to 38 I deflated it too and it helped for about 10 minutes.
My morning drives seem to be better but it seems to be a factor of the lower ambient temp (55-60F) versus old ambient of 80-90F in the morning.
Anyone seen anything like this?
I'm thinking I am either working out some flatspotting from not driving much from March until July or some of these tires have an issue as the front tire temps get up to the 120-130F and 38psi.
I had the dealer road force balance and rotate and when they moved the tires up front I developed a pull which was later diagnosed as a conic tire and replaced. Wondering if the other tire in the pair has some defect too. At this point though I've gone through two road force balances at two different places and two alignment checks as well as having two shops check suspension and other suspects. Tires only have 3k miles on them.
Ideas/suggestions? I plan on going back to the dealer when I have more information on how to reproduce the issue and anything I can think of since it happens less in the cold and takes longer to reproduce now.
I've also started doing the poor man's picoscope with a $10 vibration app on my phone and calculating manually but the numbers are all over the place, presumably because my phone is not mounted to the right part of the vehicle due to limitations of using a phone.