at bristol dragway (bristol, TN) the track is elevated slightly uphill, like when you are staging a M6 the car will roll backward off the starting line if you dont hold the brake....
is any other tracks like this?

 

Not usually. It depends on a lot of things including how old the track surface is, how many oil downs there may have been on the starting line, etc. That track is not that old. I'm surprised you're having a problem. Maybe the track is setteling from being completely re-done a few years ago? I'll be interested to see if anyone has a problem in the upcoming NHRA race there.

 

this happened last year and this year....supposedly they reconcreted the first 100 feet this year. altitude is 1744 with a usual DA of 3000-3500 sucks

jesse

 

Mid Michigan Motorplex in Stanton is not like that at all.

 

They might have a ground problem from when they revamped the entire facility. A lot of earth moving went on. Another possibility: Sometimes the starting line in the area where the rear tires sit will get a little dip (for lack of a better word) from all the cars when they leave the line. Sort of an erosion from the rear tires trying to tear the pavement up. This has the same effect as staging on a slight incline. Try staging a little to the right or left of where most people stage. Just a thought.

I'm confused. Both of the cars in your sig are A4's

 

i personally havent had the problem all my M6 buddies complain about.

you would think being an NHRA track (even the powerade series will be there on april 30) that it would be flat.....

jesse

 

All NHRA tracks have to be with in 1 degree +/- of level. I am willing to bet that Bristol falls within that requirement. There is probably another reason you buddy's car is moving on the line.

 

what else would cause it to roll?

 

Or an extremely out of balance tire

 

Years ago I went to a track by memphis that if I remember right the first half was slightly downhill and the second half seemed to match that grade but uphill. (this would have been around '85)