- Jul 14, 2017
I've been asked to modify an space saver spare tire to fit vertically in the trunk of a sedan, there was couple of difficulties, first of which the car has big brakes so i have to use 15" rim. And there aren't any rims in the correct bolt pattern. so i did some research and come up many failed re drilled rims, after considering this is a spare tire for very limited use the strongest solution was to cut the middle of it and one from a rim with the right bolt pattern and join them, so you can see the flanges i made earlier and my setup using hand ground HSS parting tool, the charter was incredibly loud so i slow down my lathe to 16 RPM and that did the trick for the second rim i angle grind the centre in between the vent holes. Then i had to finish the second flange to accept this centre and from there i did almost the same machining except i left about 1mm edge so they can locate one in other, i'll tack weld it then check it if all alright then fully weld it both sides.