I have a 2000 Accord with factory tires. Due to a blow out, I need a new one.. I have a Michelin XSE M&S P195 65R 15 load 89H. Sams has a the exact same tire but at a 91H load range. Sams says he would install it but not really recommend the mixing of 89 and 91 even if they are both front or both back.. Any tire experts that can address this.. I can't find the 89H anywhere..