Backspacing and boltpattern on rims

[kcskoogs]

What is the backspacing of a rim? and how do i measure it? another question i have is how do i measure the boltpattern? I plan on getting some Torque Thrust II rims and need to know if they will fit my 66' mustang coupe.

 

[2bav8]

Backspacing is measured by laying the rim flat on the ground and taking a tape measurer to the backside of the rim (the part that faces the brake caliper/spindle) and taking the measurement from the mounting surface of the rim to the outer lip of the rim.

All V8 Fords have a 5x4.5" bolt pattern.

 

[ForceFed70]

All V8 Fords have a 5x4.5" bolt pattern.

Careful with that statement. I think it only holds true for all ford V8 passanger cars. Trucks are a different story (especially the newer ones)

 

[kcskoogs]

thanks

thank you thank you

 

[yeloxr7]

Careful with that statement. I think it only holds true for all ford V8 passanger cars. Trucks are a different story (especially the newer ones)

...and 89-up Thunderbirds have a 4 1/4" bolt pattern.