Originally Posted by Mikefpt
What is the best tire size for my monaco diplomat 2006. Currently has 285/80/22.5. Looking at hankook and quoted 2,700 for six, balanced,installed,new stems.
You should double check your tire size. I believe you have 275/80R22.5. When changing tire size, the 2 important issues are:
1. Physical size. There must be clearance in the wheel well and the duel spacing needs to be ok on the drive axle. Also if a bigger tire is compatable with your wheel width.
2. Load range needs to be adequate for your weight.
Your biggest gain would be if you can use 295/80 size. You would be able to reduce psi quite a bit, if that is your goal. If the 11R size will work it is more widely available than the metric sizes.