On 2006-05-25 04:55, 392Bird wrote:
Watch this video to see MT Drag Radials in action. The 1st race is the Drag Radial Final at WFC last weekend.
The MT drag radials are FAR better than the BFG's. But the cars running like the one above are running that well DESPITE having to use drag radials, not BECAUSE they are running drag radials.
Shock loads are the killer to drag radials. Their sidewalls aren't as forgiving as a bias slicks, so they don't absorb shockloads very well. This makes it tough to make them work with a stick shift. They also don't recover very well once they start spinning. They work pretty well on cars that apply their power in a smooth fashion. (automatics, turbos, etc)
I have a friend that has a set of MT drag radials on a 1969 Camaro powered by a 421 SBC and an automatic. It has a VERY loose rear suspension that absorbs any left over shockloads from his automatic. It will pull the front wheels on a good track, and even hooks pretty well on the street. They aren't a slick, but are about as close as you are going to get with a radial.
The guys in Super Stock that use radial slicks use them on GOOD tracks for record attempts. IF they hook, they are slightly faster than bias tires, since they have less rolling resistance. IF they spin, the run is over. Most of these guys use bias tires for their 'regular' runs.
If you don't really NEED a slick, and you've got an abundance of traction, you will probably be quicker on a drag radial. If you are somewhat traction limited (can't launch WFO without spinning) you'll be quicker on a regular (bias) race or DOT slick.
Good Luck!