Did you get the 30 degree temperature from your dealer, Michelin, or where please?Not real happy that GM doesn't recommend driving on the factory tires at temps below 30* as they might crack !Did they forget about us guys in colder climates? And yes,I refuse to let it sit until spring!
Each to their own, I would not drive my C7 with the OEM tires in 35 or less degree (ambient high) temps. I find that when you do the tires have far less traction and adhesion than you are use to or need in an emergency.I had high performance tires on my Camaro and drove it all winter long in Pa with the exception of ice and snow. Had no issues other than driving slow until they warmed up which didn't take long. I plan on driving my c7 the same way.
When I read a post like this I can only think how fortunate I am to live in Texas. I predict only 3 to 4 days this winter I will not be able to drive our new baby. If I had to buy new tires the first day I got my new corvette I would not be happy.Not real happy that GM doesn't recommend driving on the factory tires at temps below 30* as they might crack !Did they forget about us guys in colder climates? And yes,I refuse to let it sit until spring!
Please attach this pdf document here so we can all see it. The only thing that's been posted here and elsewhere is the Camaro / Goodyear document and while there are similarities it doesn't apply to a Corvette / Michelin equipped car.The official GM bulletin says reduced trasction below 40F, Operating the car below 20F may damage the tires, and they show pictures of cracks. I got this bulletin from a GM service manager so it is the real deal. Its a PDF, I'll email it to you if you want.
Perhaps the last page in the bulletin, in the post above yours, is the info you are looking for.Although I didn't see where the bulletin mentions this, I have read more than once that STORING the tires at lower than 20F can cause cracking, especially if the tires are disturbed in any way, including adjusting inflation pressure or warming them up too fast. I'm glad to see GM is better documenting this issue.