Hi all, first time poster getting back into the habit for nostalgia reasons. I recently bought and built a Boomerang (the car I had when I was a kid), and having really caught the bug, bought the Avante 2011 (the car I always wanted when I was a kid). the builds were both great fun, and a friend of a friend gave me a set of replacement wheels (53880 / 53881) with modern tyres that should fit the Avante.
I'd run the car on the original cam-loc/spike wheels, but skidded all over the place. However, when I fit these new replacement wheels the first time, the motor made a lot of noise, but the car barely moved. Opening up the rear gearbox I found the pinion gear was loose. I tightened it up (and switched back to the original wheels), and all was good. I switched to the new wheels again, and got the same issue, lots of noise, minimal forward motion. I also found the front wheels were not being driven by the motor. Again, opening up the rear gearbox and checking the center diff, I found it almost unscrewed. Once I checked it and tightened it up again (and switched back to the original wheels) all is good again.
I really like the look of the modern wheels, but now I'm worried that using them is going to result in serious gearbox damage since the car seems to develop issues running when they are fitted. When fitted, there is no more or less resistance to turning the wheels compared to the originals. The clearance is minimal to the rear knuckles, and I think it could rub a little, but not enough to have any real issues. Are these wheels not compatible? Everything I've read says they are? Is it as simple as I'm over-tightening the wheel nuts?
Thanks for your help. Also attached is a pic of Perry and Ted in their respective vehicles. Trying to decide what I car I want to do next. Maybe a Super Hotshot. I got the Boomer as the Beatties had no HotShot II stock on the day we went to buy it.