rim reccomendations for 85 k20

[onemean85]

blew a tire today so im buying new tires. found a set of 35/12.5/17's for a good price. now need rims. truck has about 3-4" of lift. had 35's on 16.5" rims. my main question is what backspace/offset do i need

[Captkaos]

Factory was 4" on a 7 or 8" rim from what I remember.
Just measure yours and offset accordingly.