If you do graduate to 2.2 rims go w/the gladiator tires. Work well in many conditions and many of us here use then on our crt.5's
http://www3.towerhobbies.com/cgi-bin...&I=LXDX67&P=ML
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S