.Parker got it correct I believe...

...This is from the third paragraph from the link you posted...

"The distance is measured up the ramp and on the ramp, not to the actual hub of the wheel. That number is the divided by the vehicles wheelbase and then multiplied by 1000 to calculate the average. For example if a vehicle with a 81 inch wheelbase traveled 59 inches up a 20 degree ramp then the RTI would be calculated as: 59 divided by 81 x 1000 = 728 (rounded down). This method of multiplying by the vehicle's wheelbase allows vehicles of different wheelbases to compete with each other on the same ramp."

...Our scores were on a 30 degree ramp..so they would be mathematically higher by one calculation...

...This is Rick's truck on a 30 degree ramp which scored the 601 I posted...

...Nice X Parker...I will be looking forward to reading about your mod's and hopefully some more info on your build...Have you started your registry here yet???...

...Post #42-#44 of this thread could offer some more insight...

http://www.explorerforum.com/forums/showthread.php?t=197788&page=3