I'm the 2008 Jayco 17c Ex-port HTT guy who wants to change from OEM ST185/80D13 because they are impossible to find on the road to replace a failed tire. The tire I want to change to is the ST205/75R14 tire that I think is very commonly found on the road and I think will carry weight at, or above, the 1,660 capacity of the OEM tire.
What I've discovered since that post with a visit to a Jayco dealer.
> The ST205/75R14 tire Jayco uses is printed 1,740 lbs on the sidewall.
> Jayco is using the ST205/75R14 tire as OEM on 18'4" 3,500 gross weight single axle trailers.
What I've learned from
http://www.barrystiretech.com/sttires.html
is the ST205/75R14 needs 3/4' more diameter, 3/8" more side clearance (thickness?) and new wheels.
Neither the Jayco Parts dealer nor "my tire guy" knows of anyone who made this change. Does anyone on this list know of this change being made and how did it work out?