Hi there!
I have ordered a set of 26x10.5x16 ET Streets, they'll arrive next week.
It was a long decision, but I have to cut down my 2.3-2.4 sixties.
I have an M6, stock 10 bolt with 3.73's. There is no track prep or whatever, just plain tarmac. My problem is, I have absolutely no clue how these tires will hook on regular tarmac...I'm worried busting my rear.
Right now, with street tires, I release the clutch at 2500, and I get some wheelspin. What do you think, dropping the hammer at (let's say) 3500-4000rpm, is it a bad idea? Will it spin?
Do I have to heat them up every run? We have no water box, so I cannot figure out how to do a burnout on tarmac....

I know there are a lot q's, sorry.

Thanks in advance!

 

No water box sucks. Breaking them loose may be hard on the equipment. ET Streets should be treated just as you would slicks. Doing a burnout cleans off the debris and heats the tires so they stick better. You will need to experiment with the length of burnout required for your track surface. My experience is new ET Streets require one real hard burnout, and then shorter ones are ok.

I wouldn't recommend changing your launch style just becasue you have tires. The rear end will break if you have too much driveline shock (traction). I would first go and do the same thing that you have been doing so you have a reference point.

I run mine with 14.5 pounds of air generally. I also use rim screws and tubes. They hook very efficiently. Just prior to releasing the clutch clip it slightly to pre-load the drivetrain so it does not have a total system shock. I know this is difficult to do while cutting a good light but it will help preserve your equipment. You also may want to check your U-bolts for cracks (just replace them as they are cheap) because they will be under more strain from the increased traction.

Hopefully you have a driveshaft loop too as you can twist one off with these if you hook up.

 

You indicate you are going to be using these on "regular tarmac". That's on the street? Keep in mind, these are not street tires. The sidewalls are thin and lack rigidity. Consequently, kiss a curb, and goodbye tyre. More importantly, they are squirrely under side loads, as in cornering. You can partially compensate by running at a higher pressure, but this negates some of the traction advantage. My best times with similar tires were at 12.5psi, very squirrely when turning!

And do not try driving with them in the rain, ever.

Rich Krause

 

He is overseas. They set up timing equipment and run.

 

tnthub,
Thanks for the input!! I think I have to bring a gallon of water around the staging area and let my friend pour it on the ground...
I hear some fellas are launching against the line lock, to prevent driveline shock. I think I need one, too.

Rich,
Oh, no, there will be no street miles on them or whatever. The drag event is held at the main strech of a road course, that's why I said it's like regular tarmac.

Thanks guys!

 

Exactly! or

 

Line Lock is a great idea. It's a lot more co-ordination but it is possible to do the same with your feet.

 

Its possible to connect the linelock to the clutch pedel. The linelock is released when the clutch pedel comes up. It helps hold the car on the line.