Tire size versus ET's street radials

I run 315's street radials on my dart and it pulls 2foot wheelies on ss springs, 142 60' and gone 938 at over 148 , I never tried leaving harder then 3000rpm so I'm sure the 60' would drop if I hit hit harder, also at the top end there like riding on a rail compared to slicks wiggle !
To bad my 498 went boooooom though lol