My son has been riding with us since he was 9 months old. He never really cared for the trailer so by about 1 1/2 we put him on a Rhode Gear bike seat (you know - the one that sits on a rack behind your seat). He loves it - he can look around, etc. MUCH BETTER! Well, he's 4 come September. He's too big for the bike seat. His knees come up high and get sqeezed by my bike seat (hard to explain) and he kept telling me this weekend he's too big for the bike seat. I don't road ride with him much - mainly rail to trail, some mileage at the beach and 1 or 2 organized rides a year. So, here's the question - is he too young? too small? for a trail a bike. We bought an Alley Cat from a neighbor that has barely been used. My husband wants to get him out on the trail a bike but think we're about a year from that? Who has used a trail a bike on a child less than 4? He's not quite 40 lbs yet, maybe about 39 inches tall.
Thanks for your responses.