Well,I discovered some 13" rims I'd bought for my tractor (trailer rims originally) have the correct bolt circle,but the center hole is about 1/8" shy of fitting over the hub pilot on one of the tractor's I may use them on..
I've had to do this before and it was always a pain--hours of hand filing,or using a air powered grinder with a carbide burr,or grinding stone,and the results were always less than "good" as far as fit or appearence..Used a cutting torch too,but I aint hacking up the rims that crudely..
Anyone have a better way of doing it?..I just mounted the tires and hate to have to take them off again..if I'd have had a brain,I'd have tried them o the tractor when the tires were off,then maybe I could have had someone put them in a big lathe and open up the center hole,but of course that would cost money ,and I aint got any to spare right now..
I was thinking of trying a hole saw or a circle cutter thing I have,by bolting a block of wood or plywood to the lug holes,so the center drill bit on them wuld have something to help guide it..I have a circle cutting tool that is adjustible and will cut metal,I've used it to cut out 6" holes in my quonset hut wall for stove pipe to pass through..the rims dont have the usual "punched out" lip like most car rims do there,just the 1/8" or so thick steel the rims are made from..I'm not to worried about a close tolerance fit or even great looks,but want it to look better than a hack grinding ot torch job if possible..
I thought of just adding washers behind the rims between the hub,but the all the weight is only on the lugs ,and the rims wont be making full contact with the hubs..I suppose a spacer might work though,like the cheap aluminum ones they sell for mag wheels..
Sigh...I knew it was TOO easy,when I found the rims cheap,the lug pattern was correct,and the free studded snows I got for free at the dump weren't puntured or dry rotted!..it's always something..