Hi guys,
I had posted a question about winter tires for my g37x
Well I bought them but my car shakes when over 80km/h
I bought x-ice 3 245/45/r18 everyone had said these
Tires and the size are compatible on the g37x coupe
So can some one just for my peace of mind re confirm
Before I start thinking I wasted my money . Is anyone on this forum running this size on there g37x coupe ?

Thank you

 

225/50/18 is your stock size, with the tire calculator your new size results in~-0.66% difference in diameter. It doesn't sound like a diameter issue, since the wider tires are on a narrower rim the diameter might be a bit bigger than it would be on a wider rim so that would make the resulting diameter even closer to zero. It sounds like it may be a tire balance issue. The issue the AWD guys have been having when going over 80mph has been when their diameter has been over 1% difference and the AWD light comes on indicating a malfunction w/ the system. hopefully a rebalance is all you need.

 

Thank you so much for the detailed answer going to the mechanic today , I think he didn't balance right that's why it's vibrating and I figured since everyone on the forum had said that 245/45/r18 is the size ideally I should get for the 37x coupe there RIGHT the car is a monster over taking SUV's going through snow mountains lol ahahah amazing car hats off to the AWD SYSTEM