I am getting information together for selecting new tires for my Volkswagen Vanagon GL Campmobile, 2.1 waterboxer, manual transmission.  It is tan, Scott.

I am not intending to start a tire thread.  I have a single question.  In reviewing load data for several different tires, I see two different values given for the same tire.   The maximum load may be given as Load Range 106/104 followed by something like S65 psi 2094 lbs and D65psi 1994 lbs.

What do the S and D terms mean (I know psi of course) and why the two different load index values and two different maximum loads given for the same tire?  I reviewed tire specification descriptions on TireRack.com and on USDOT web pages and found descriptions of load index and maximum load, but nothing about the S and D or different loads for the same tire.

David McNeely