[Tim]

Anybody got any thoughts/ opinions/ information on the new Mickey Thompson Drag Radials? I need to step up to treaded slicks for the season ahead, and want to try and get the best for my money. BF Goodrich Drag Radials look like good performers, but don’t have DOT approval for the UK. The MT’s look legal(ish) , I wondered if anyone knows how they compare?

[Tim]

Moving on a bit, I've now fitted Hoosier Quicktimes (295 x 15 x 60) which I'm very pleased with.

For road use, I would guess the tyre pressure should be 20- 25 psi. Does anyone know what sort of pressure I should run them at, at the strip. There are no inner tubes, so I don't think I can go down as low as conventional slicks without risking them spinning off the rims. Does 12- 15psi sound useable/ safe?

[dave-r]

You want the pressure low enough so that the full tread width is in contact with the ground and a burnout produces a nice even full width rubber mark.

Too high a pressure and the mark on the ground from a burnout will be a lot less than the width of the tyre.

If you go too low there is not enough pressure inside on the center of the tread so the sidewalls take most of the weight.

So the answer is just low enough to give you a wide print on the ground.

Does Hoosier not have a web site with tech answers?

[Tim]

Thanks Dave,

I looked on the Hoosier site earlier in the week. The FAQ section tells you everything except recommended tyre pressure.

Thinking about it, there's probably no universal 'correct' pressure to achieve the results you describe above. Other variables like vehicle weight, size of wheel, etc, would mean different pressures for different cars. I'll experiment and change it by 1psi at a time until I get a full footprint.

[Christer]

Here are some links that you might find useful:

http://www.carcraft.com/techarticles/970/

http://www.carcraft.com/techarticles/80058/

http://www.hotrod.com/techarticles/43059/

http://www.mickeythompsontires.com/faq_drag.html#faq16

Good luck with your e.t:s The summer is closing rapidly

[dave-r]

Hossiers site is here;
http://www.hoosiertire.com/

[Tim]

Thank you for the website links. Lots of good information there. It basically comes down to what Dave said, adjust you're tyre pressure until you've got an optimised contact patch.

[Tim]

That'll be optimised then.

I know it's only half a wheelie, but it's a start.

[dave-r]

You need more practice on the photoshop though. I can still see the trolley jack!

[Tim]

Trolley jack? Moi?