Background; I have a slight steering wheel shake from 45-55mph. My lift/wheels were put on the same day utilizing my stock 32" BFG KM tires w/14K miles and I didn't notice any issues but I drove less than 50 miles on them before I got new 35"s. My new tires are the Firestone M/T 2 and that's when I really noticed the steering wheel shake. I've had them static balanced twice by two different installers including the off-road shop I had my lift/wheels installed at. Yesterday I had them road force balanced at the place I purchased the tires, they found some issues and adjusted accordingly but it still did it.
One of the tire techs drove it with me after the road force balance and said it could be a front driveshaft issue. Well, I just had my new front/rear shafts installed today and with that came another alignment check but the vibration still happens. We had to install some rear upper control arms to fix the pinion angle for the new rear shaft but other than that the alignment was on point. I had the manager from the off-road shop ride with me and he said it was a tire issue for sure seeing as we just did the shafts. I called the tire dealer today to ask what the next step was and before we can swap out or refund anything they have to do their own check up tomorrow so that's next up.
The internet/forum consensus is at that mph range it's definitely a tire issue. I was told by the tire shop manager I could try getting the vehicle up to the speed where the problem occurs, put the trans in neutral to limit some front shaft strain, and see if the vibration still occurs...it does. So what else is there? My stock 32" mud terrains never had an issue so is it because these are 35"s with a much more aggressive tread? I've run my tire pressure from 26-35psi and it's always the same issue in the same mph range. Am I missing something?
One of the tire techs drove it with me after the road force balance and said it could be a front driveshaft issue. Well, I just had my new front/rear shafts installed today and with that came another alignment check but the vibration still happens. We had to install some rear upper control arms to fix the pinion angle for the new rear shaft but other than that the alignment was on point. I had the manager from the off-road shop ride with me and he said it was a tire issue for sure seeing as we just did the shafts. I called the tire dealer today to ask what the next step was and before we can swap out or refund anything they have to do their own check up tomorrow so that's next up.
The internet/forum consensus is at that mph range it's definitely a tire issue. I was told by the tire shop manager I could try getting the vehicle up to the speed where the problem occurs, put the trans in neutral to limit some front shaft strain, and see if the vibration still occurs...it does. So what else is there? My stock 32" mud terrains never had an issue so is it because these are 35"s with a much more aggressive tread? I've run my tire pressure from 26-35psi and it's always the same issue in the same mph range. Am I missing something?