TR2/3/3A TR3 wheel bolt pattern

[tdskip]

Will Ronal 5.5J with a bolt pattern of 4 x 4.50 fit on a TR3? Is there a specific offset I should be looking for?

Comments/ideas?

 

[Andrew Mace]

I don't know about the offset, but 4.5" is the PCD for the big TRs.

 

[tdskip]

I don't know about the offset, but 4.5" is the PCD for the big TRs.

Sorry, but PCD = ?

Thanks Andrew!

 

[TR3driver]

PCD = Pitch Circle Diameter; the diameter of an imaginary circle drawn through the center of the studs/bolts.

Even offset doesn't tell the whole story; the wheels also have to clear the brake calipers, and the TR3 calipers stick out just a bit farther than the later Triumphs do. (Which I believe is why the later cars have smaller discs, to allow more clearance for aftermarket wheels.)

 

[PeterK]

More commonly referred to as BC Bolt Circle.

I was not aware that Ronal makes a 15" x 5.5"W alloy that fits a TR3. Their website doesn't even list Triumph in the Fitment Guide. So better to check with your source.

Brands that do currently make TR3 alloys include:
Panasport, Superlite, Minilite, KN Minator, Revolution. Available from the usual parts suppliers.

 

[Got_All_4]

zero off set on stock wheels. That means the mounts are in the center of the wheel.

 

[mrv8q]

Tom, when did you get a TR3?

 

[tdskip]

Tom, when did you get a TR3?

About 6 months ago. Engine needs some work, had to pull the fuel tank and found some DPO creativity that will need sorting.

She is waiting in my friends garage for the TR8 and TR6 to get sorted out so they are reliable drivers for the fall/winter.

I love this picture, partially because it makes her looks better than she is, and the roadtrip back from Albuquerque was fun.