BFG Dr Radials on rear ONLY

[Mike from Jersey]

Has anyone tried running drag radials on the rear only, and regular street radials on the fronts for the track. I was just wondering if this might cause a problem with the AWD on a hard launch??? My plan was to go with the BFG 315's on 11" rear wheels and BFG 275 KD's on the fronts. That way I could use this setup for the Vette OR the Sy at the track.

Thanks,
Mike

 

[tyndago]

Use KD's all the way around......

They hook fairly well....


Really on all wheel drive vehicles - I like to see the same brand ,modeland size tire on the front and rear , but production tolerances probably throw all that stuff out anyway..

 

[kwick6]

I really like the KD's, and wanted to get a set for the ty, but they don't sell them through tirerack for the stock wheel.

The KDW's are available, and was thinking of trying them since they're only $116 each.

But the GSC's are still going for 400/set from slp.


Sorry for rambling in your thread. :roll:


Scott

 

[tyndago]

KD's were the best tire we ever tested on the GT-R's . In tire tests in Grassroots Motorsports they did really well.

KDW's are for wet - not quite as good as the KD as a performance tire...

The KD's hook well enough on a GT-R for one guy to snap the main shaft in his GT-R....

 

[Mike from Jersey]

Sean,
Thanks for the reply. I have heard that the the KD's were abnormally sticky for a street radial. But the 315 drag radial would be needed to hook my Vette at the track, so I was hoping for a dual purpose set of tires and rims. The drag radials would probably be a little stickier, which might throw things out of wack and maybe hurt something in the driveline, namely the transfer case?? So has anyone tried this DR-radial combo?

Thanks,
Mike

 

[tyndago]

The transfer case is designed to slip a little... its just a constant large slipage causes a lot of heat which can burn out the coupling in it..


I would say for a few passes at the track- and limited street it would not be much different than say running the same tire pressure front and rear.....

In other words....I like the same front and rear....but I dont think it will be a problem...

 

[bdubb]

i'm pretty sure BG ran DR in back for a while in his old 11.0 syclone.

 

[Mike from Jersey]

Thanks for the replies. I will try it out and see how it goes.

Mike

 

[typhoonzz]

I've got nitto dr's on the back, regular tires on the front and I havn't had any problems. i don't bother heating them up, run similar air pressure and they hook like a mofo....
Before, when staging I could start building boost on the line and the rears would start spinning...don't do that any more and I didn't change anything with the rear brakes....
Love em, and would recommend em to anyone interested

 

[Mike from Jersey]

Thanks Gabe, That is what I was hoping to hear.

 

[Mike from Jersey]

 

[Mike from Jersey]

 

[hamrhead]

Don't wanna sound silly, but I don't understand what it would hurt by running DR's on the back and not up front? As long as they are the same sizes to keep the T-Case happy.

If someone has the time and patience, please explain. Thanks.

 

[tyndago]

The transfer case is designed to slip a little... its just a constant large slipage causes a lot of heat which can burn out the coupling in it..
I would say for a few passes at the track- and limited street it would not be much different than say running the same tire pressure front and rear.....
In other words....I like the same front and rear....but I dont think it will be a problem...

Different types of tires - different brands of tires - even in the same size , profile and rim size are often different heights....

So a 275/40/17 Drag Radial from BFG may be a lot different in overall height from a Nitto 275/40/17 .

The more out it is - the more difference in slack your transfer case has to make up.....

Slippage = heat. Heat in clutches is what hurts them.

 

[hamrhead]

Gotcha- Thanks! I had figured that was the reason, but didn't know if there was something else.

 

[Mike from Jersey]

Here is something to think about concerning how tire height affects our trucks. After some extensive research on this subject, one of the guys on the list (sorry forgot who,but thanks to ya') determined that because of the difference in loads on the front (most of the weight here) as opposed to the rear, the tire height (obviously) would be different. I believe he came out with a 12# difference for inflation of the rears vs fronts. I tried it and my truck did seem to run smoother. I now run 30psi rear and 42psi fronts(tires warmed). I've been running this way now for a couple years and everything is fine. Anyone else do this??

Mike