I have run (see links in my sig) 14x60x235 for near on 30yrs, on all 4 cnrs
Used to have BF yrs ago, but for road use found them a bit soft and not as long lasting...and bloody expensive in NZ...which is more expensive and short lived if showing off lo
Now I just what ever has white lettring on, and they tend to harder, longe lasting and let loose a LITTLE easier when showing off.
Personally if I did have the extra bucks in the back pocket I would go for the 15 rims..fills the wheel well nicer, and the same width are a damn sight cheaper, easier to get.
Did you have to change out your speedo gear to keep it accurate?
Only if the diam is different to what u have now....if it is its no big deal...
Take the gear out in the tail shaft, couple minutes, count the teeth.
Mesure the % difference in Circumferance between the old tyres and new, and change the teeth number the same %......assuming the odometer was reading correct before.
OR put the tyres on...simple do a distance check against google earth or known distance....10 miles + work out the % error, count the teeth and change the gear the same %.