I am looking for a new bike for my 12yo son. He's a little short for a 26", but will probably outgrow a 24" soon. He needs a bike now and I'm trying to avoid buying two bikes in one year. I'm reluctant to get him a bike thats too big for him, but I was wondering if I could buy the bigger bike and then reduce the height of the bar by installing smaller tires. He only needs a few inches.
Has anybody ever heard of this? The front wheel seems easy enough, but how complicated would the rear switch be? Can I put a 24" in the front and keep the rear 26"? What about the brakes?
Lots of questions, Please Help.