Look at the title..

 

i highly doubt it, even if you could a rim with a crack is only gonna give you problems later on.

 

Many cast wheels show hailrline cracks behind the spokes after time. It could be just the finish cracking. Google a good wheel refinisher, they may be able to fix you up. Hairline cracks are pretty easy for them.

Try:

http://www.wheelcollision.com/

http://www.rimpro.com/contact.html

http://www.fixrim.com/

Good luck....

 

Hairline cracks that appear over time are not repairable. Cracking on the back of the spoke is a precursor to wheel failure. Do not continue to use this wheel. Very carefully inspect the rest of your wheels.

 

I agree with Alan. It is very difficult to know if it is just the finish or actual metal fatigue. Get yourself something new.
In general, I am not a proponent of wheel repairs. Often, heat is used indiscriminately by well-intentioned repair shops, creating a questionable strength and load rating after the fact.
Not worth the risk IMO.

 

There was a rim failure this weekend at the track (DE) from a wheel that had previously been welded to repair 2 cracks. 2 new cracks started about 1/2" from the repaired cracks, and the tire of course blew out on the track, luckily no damage to the car.

 

This is an example of the embrittlement caused by the repair. Even though the wheel may "look" OK, the metallurgy may have been irreparably compromised by the repair process.
Forged wheels can also be affected. Improper application of heat affects the "heat treating" of the material and can seriously weaken the part.
As an example, 6061/0 forged alloy (no heat treat) has a tensile strength of less than 20,000 psi. When heat treated to T6, the identical alloy has a tensile strength of almost 50,000 psi. If you then reheat the part to do a repair, you then have no idea how strong the part is.
Not good at 55 mph, much less at racing speeds and loads.