So my 8 year old just started BMX racing this year and loves it - when the track is quiet I'd like to go out with him on the track, but my old Cannondale CAAD2 frame is much more of a commuter than a track bike. Can anyone suggest what might be a good bike for an older guy, 5'8" and 200lb? My son just wants me to get a BMX, but I'm thinking more of something a bit more like a mountain bike. But I'm also thinking single speed might be good, just for durability and maintenance reasons - I already have a perfectly good commuter bike for when I need to get places.

Just looking for suggestions on what might be out there that would be a good fit, new or older models as well as I have no issues buying used. Budget about $1000 or less. Who knows, perhaps a BMX is best?

Thanks!