Road legal drag radials

[Tet]

Is there any rule of thumb for what size tyres you can put on a given rim? I know that for road use, the tolerance is huge, and you can get away with unbelievable differences between the two. For drag racing, I would guess that lower tyre pressures reduce that and they have to be a bit more closely matched. The question is, how close? Does anyone have any idea?

[Time Machine]

Tet said:

Is there any rule of thumb for what size tyres you can put on a given rim? I know that for road use, the tolerance is huge, and you can get away with unbelievable differences between the two. For drag racing, I would guess that lower tyre pressures reduce that and they have to be a bit more closely matched. The question is, how close? Does anyone have any idea?

I've previously been told an inch either way though I am sure it depends on a lot of factors.

[Tommyb]

There are a couple of outlaw Drag radial cars,that have just run high 6's at well over 200mph on the MT's.
Mickey Thompsons Drag Radials rule

[redvictor]

Tommyb said:

There are a couple of outlaw Drag radial cars,that have just run high 6's at well over 200mph on the MT's.
Mickey Thompsons Drag Radials rule

I know.

[mjjrV8S]

How about Toyo R888’s?

[DangerousDerek]

mjjrV8S said:

How about Toyo R888’s?

888's are a good improvement on road tyres but drag radials are in a different league.


My TVR Chumaera runs a 1.9 to 60 foot on road tyres, a low 1.8 on 888's but ive ran 1.51 on MTs