Tap and Die Sets

[adambradford]

Hi everyone! Been lurking around here for a while but this is my first post.

Bought a Camper in the summer and I'm in the middle of doing a home resto job on it. I have a newbie question for you all to laugh at:

I'm trying to restore the original steel wheels, but getting them off is proving somewhat difficult - it's like someone welded them on there! All wheels but one are now off, but I had to chisel a couple of nuts off the rears, resulting in damage to one stud on each side. I reckon a good Die would repair the threads, as the damage is only minor.

My question is this: Does anybody know what size I need? Tap and Die sizes are a complete mystery to me, I was going to buy a set off eBay but I have no idea what to buy. Someone told me I'd have difficulty finding one that big. Are they talking rubbish?

Also, if anyone has any advice on how to get a front wheel off when two of the bolts won't move despite having a 12 stone man jumping up and down on the lever, I'd be grateful! Otherwise I'll have to swallow my pride and take it down the tyre place.

Thanks,

Adam.