Originally Posted by ottoman
I am new to 12th scale and I have a question... I had a set of Jaco rear tires on my car. I bought a differnt brand of rear tires and I noticed that on the Jaco rim the mounting flange is flush with the edge of the tire and the new set has the mounting flange set inside the tire .120. This will narrow the rear track width of the car by almost a 1/4 inch. How will this affect the handling of the car? Do you use track width as a major tuning option?
Sounds like you bought TRCs.
You just need to add axle spacers (washers) to each side to bring the width equally out to the ROAR max of 172mm.
Hopefully, your chassis has a center mark on it; so, you can measure the width of each side.
Bill