[studio54]

Hello,

I installed 4 new tires michelin pilot sport 4 on a N54 135i:
front : 225/40/18 on 8 wheel
rear: 245/35/18 on 8 wheel

There is now a kind of humming/rolling noise (not very loud) on corners at 60-80mph and + speeds (no screeching), espcially when tires are hot.

They made a balancing + alignement at the shop.

For the moment, i only drove like 300 miles. May i need to drive more ?

Before installing these tires i had continental sportcontact with the only difference that it was 215/40 at the front, and i had no noise problem.

What to look first ?

Thanks for advices.