Now I know many of you know this already, and I knew it as well otherwise I wouldn't have done it. I was having a problem with a resin kit car that I am building (not the 612 it is silky) it just wasn't as smooth as I wanted and tended to hop down the straight and around corners. I was starting to look at the resin chassis and checking clearance and straightness and wondering whether it need bracing and a few other things. But after a bit of thinking I thought I will change the tyres first. So after a bit of hunting for a suitable pair I put them on and without truing or anything I ran a couple of laps - wow smoother no hop I knew I was onto something.
So onto the truer for them and the tyres of a couple of other cars. The result silky smooth running.
So many of the old hands know this already but maybe those newer to the hobby may not realise what a difference a good trued set of tyres can make. Replacing and then truing the tyres has totally transformed the 3 cars the resin kit car, my new Fly Lancia 037 rally car and my new slot.it 312 Ferrari (which was pretty smooth anyway :))
cheers
David