My local tire dealer would like me to buy a "trailer" tire, 205-75-14/C.  I assume that the C rating means it can endure the Westfalia's weight, but I'm curious about what effect a taller tire will have on an already under-powered van.  I can't seem to find the revolutions per mile rating of this tire, Carlisle radial ST205/75R-14/C.  I'd appreciate any thoughts from the list.

Please pmail me so I don't have to wait for the digest.  Thanks.

Bob Trousdale
'90 Westy