I tend to take off and land in grassy areas so I saw others do it and decided on larger wheels. I saw others use mismatched size wheels because of the front landing gear spring. I wanted all the wheels the same size. I went with 3 1/4" Dave Brown Lite Flite Foam wheels. They are heavier than OEM but the plane wasn't out of balance. First flight with them is in about an hour.

Thanks for sharing.

The mismatch you're referring to is normal - most tricycle gear airplanes have a smaller nose-gear wheel than the main-gear wheels since the mains carry a majority of the load.

Passing on a technique someone told me about to improve the look of those Dave Brown wheels: stick the wheels in the freezer for a while to stiffen the foam tire, find a long screw and nut to use as a mandrel that fits the axle hole, then chuck each wheel up in a drill press. With the drill press running, use a Dremel and sanding drum to shape the tire and give them a more pleasing rounded cross-section.

The stock wheels all came the same size but I have noticed that. And what a smart idea putting the tires in the freezer. Thanks for sharing that!

on hard runways a slightly smaller front wheel will work just fine. on grass,... I prefer the front wheel to be at least the same size as the main gear, or even slightly larger.

Yeah, I didn't want a smaller front wheel. And for my plane I think what I have on there is the largest that will fit.