[thefro526]

Regardless of what wheels you end up going with, you're not going to get the results you're after without adding a significant bit of weight to your machine.

W-Tread profile Versa Wheels are hands down the most 'grippy' wheel for FRC that right off the shelf, especially when cost, weight, and other factors are taken into account. We ran these wheels in 2013, and are running them again this year and have yet to find an instance where we needed more traction - outside of situations were we were being defended and or defending multiple robots.

Colsons with custom treads are probably the second best option, but are going to end up being a bit more expensive and a touch more complicated to use than the W-tread Versa Wheels. 11, 125, 228, 558, 2168, etc all swear by these wheels, and as far as I've seen, they hold their own against just about everything.

All of that being said, if you plan on playing heavy contact defense, you're going to want to be at least 100lbs or so, since weight is one of the primary factors in 'traction' and/or 'pushing' power... At 77lbs, you'd effectively need 50% more traction than a machine at 120lbs to even be able think about playing proper contact defense, otherwise your drive is going to quickly overpower your wheels and cause them to spin in place which is going to accelerate wear no matter which wheels you use.