Tamtechs were originally delivered with SPONGE tyres. No options available. Sponges suck on hard surfaces. No problem, static-scale-model rubber tyres grip nicely.
...Until Kyosho mini-z F1 came with their unbeatable soft rubber, and left my old (but still very much alive and kicking) Tamtech in the ditch.
Revenge is a sweet dish... now I've fitted mini-z F1 wheels & tyres on my Tamtech! Sticky like glue
http://uk.geocities.com/sabildz4/Mod.../124RpTyre.htm
For access to the complete webpage, click on my "www" button.