2 wheel drive OBS , Biggest tire/wheel combo

[Diesel23]

Hey guys , I did do some searching and looked thru the wheel /tire combo in 99-15 SD section, and thru aftermarket 94-97 aftermarket with no luck
What's the biggest tire /wheel combo for a 2 wheel Dr OBS truck ?
Pics would be nice

Would 20x9 and 305/50/20's fit ?

 

[DisturbedS10]

Hope this works. 305/70R16 on 16x5 4.5" bs no lift

315/75R16s on the rear. Did try them upfront but I only had 3. They cleared with 2" daystar spacers. Springs are original far as I know with 212,xxx miles.