[Keith 944]

If you can switch to 16 inch, do so and use a 14 ply tire. the tires I use are like for a logging truck. They?re 100 psi pressure, you have to put in good steel valve stems too. I go for five years and sell them for $200 a set. I haven?t blown a tire in the last 10 years.
Oh yeah, forgot to add: and Slow down! high speeds create lots of heat in the middle of summer on these ever smooth highways