Hey guys, maybe someone can make sense of this for me. My G37 sedan has consumed the inside front tires much faster than any tire anywhere else. Rears are totally even at about 4/32, fronts middle and outside is about the same, and front inside is pretty much down to cords. I've checked the alignment, and the specs are following:

Front Left:

• Camber: -1.3
• Caster: 4.7
• Toe: 0.02

Front Right:

• Camber: -1.1
• Caster: 4.7
• Toe: 0.01

Rear Left:

• Camber: -1.5
• Toe: -0.01

Rear Right:

• Camber: -1.8
• Toe: 0.02

I know most people will say that there is too much camber, but -1.3 degrees seems so insignificant, and looking at the rear specs, which are even more aggressive, that doesn't explain why rear tires are wearing totally even. Anyone have any ideas? I've taken it back to alignment rack, and had them put the toe to toe in setting, to match factory specs.

 

I believe it is just the geometry of the front wheels tbh. I have front adjustable control arms and I’m sitting at -0.6° camber but still the same issue. To improvise I take fast corners now so it can even out the wear.

 

That jus sounds crazy to me. The SLA up front should be keeping the camber angle more or consistent throughout the travel, so that -1.2 average between two wheels shouldn't change much. On top of that, the car is mostly driven on the highway, which should not incur that kind of tire wear. I'm starting to believe that maybe having the toe set dead straight was causing this issue, because I don't remember this kind of wear previously on front tires. I have dropped the car at some point an inch, which is why camber is at -1.2 instead of much closer to 0, but I think I was still getting pretty good tire wear right up until I changed the toe. I've got a new set of Bridgestone S-04 Pole Positions in the garage, so maybe after I install them, I can revisit this thread with my findings 10k miles in.

 

If you set your toe at 0 when you start driving the suspension components move a little back so the car starts getting into the -0.01 degree region which could cause some wear but it would not be a drastic amount. I usually set my toe at 0.01 or 0.02, so that when car is in motion the toe changes slightly closer to 0 degrees. I hope this makes sense.

 

I've considered that. The one thing that you overlook is the steering arm rod, which is ball joins on both sides, and has 0 give. While the soft bushings will deflect a bit, I'm not sure how that will affect steering angle, if you factor in the tie rod end.