Will taking off your stock 17" tires and putting on the M/T ET street drag radials effect horsepower and torque numbers? I didn't know if a smaller tire would show different results on the dyno.

 

if the tire/rim combo is lighter you might pick up some RWHP.... but your engine is putting out the same

 

I quess noone knows

 

i'm sure some one knows for sure wally.....

if i had to guess, i'd say different wheel/tire combos
would fall under the drivetrain loss factor

like someone already said, the bhp won't change but
maybe the rwhp number may, slightly

 

No, it will not change the dyno number. MT E/T streets are for grip, not power. Reduction of unsprung weight will help, but not changing of tires or gearing.