Not much help but we tried the 29.5 x 10.5 Phoenix after running the same size M/T. The Phoenix was a lot taller than the sidewall designation, it rubbed on the body work when the tyre grew at speed. IIRC it was acting more like a 30.5 tyre, car ran well with them though for the few passes we had them on till we realised what was happening. A friend bought them to try on his 10 sec truck, he was impressed also. HTH's


'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03