[GO-RIDE.com]

Having driven both a AE B44 and a CRT.5 quite a lot I'd say just buy a B44 before you put a bunch of money into making a CRT.5 smaller and lighter. The B44 pretty much rips right out of the box when it comes to a true 10th scale track. With that being said I really love to drive the CRT.5 with either truck or buggy wheels. You can hang it out a lot more than the B44, but a B44 with a 10.5 will just about run with my CRT.5 and 6.5. The back straight speed is pretty close and the distance they jump is very close. The B44 is so much lighter and very dialed for a smooth 10th scale track.

If you want something more durable, I've been hearing good things about the Kyosho Lazer ZX-5. It also uses standard car packs instead of saddle packs like the B44.

What wheels did you find that are that much narrower and still clear the steering rods?