[woodcote]

No, not many of the T-Jets are near 0.490". The small magnet does help with stability off the line. Too high at the back and you get more front lift and less downforce. The Super Tires Tuff-1 0.400" size seems a good tyre on stock hubs.

And yes, you can add a spacer on the rear screw post to raise the body for wheel/tyre clearance.

Do drop me a PM and I'll get you some Micro cars in the mail