got my new prostars .. gonna be drilling them tonight for M/T tubes and screws

what size drill bit (and what kind) should i use to enlarge the stem holes for the tubes ?

i think it was 5/8" .. but wanted to make sure before i drilled them

 

yes, 5/8"

 

well for rims to tires .. i got directions with my screw kit

it came with 35 screws and the drill bit for them for $15 cdn !

u drill 8 holes on each lip (34 holes total) . use 1 screw to tap all the holes .. put the tire on .. inflate it .. then put the other 34 screws in .. dont over tighten

done

 

I wouldn't put the rim screws in just yet, you should run the car and see if the tire is slipping first. Why drill all those holes in your brand new rims if you don't need to. Theres no given that says the tires will move on the wheel, JMO.

 

Is it possible the Welds already come with the 5/8" hole? I just added some Summit tubes with the big brass threaded valve stem and they fit fine. Before that I was running some screw-in tubeless stems that look like they were only about 1/2" or less, but had a rubber bushing to center the valve in the hole.

There is some good info on the Mickey Thompson tech pages about rim screws.

PS: 4 x 8 = 32

 

i have no idea why the kit comes with 35 screws then

any my MT tubes definately dont fit the weld stem hole !! maybe the summit tubes are different

 

I'm a cheap SOB ... went down to Ace and bought a box of sheet metal screws for $.89