Thank you. I really appreciate the alert, Stephen. Sadly, the GM dealership that services my volt recommended these tires. Even more sadly, not knowing you, I trust/value your opinion more than them! What to do now---bigal,
It's not recommended to mix tire models on a car, they can pull differently in adverse weather conditions making a car unstable and unpredictable leading to accidents. I replaced 2 of my tires as well but used the factory model to change out the two baldish tires that were 2/32 depth on my Volt. Bought 4 tires of the same model 16798 91H Michelin Energy Savers to get the rebate on a 4 tire purchase. The last two new ones will be installed in the fall. The Michelin Energy savers aren't that great in rain and worse in snow but I live in SoCal so that's not usually an issue for me.