Old dude here at 40 years old looking to get a BMX bike for use on the track with my 7 year old son really wanting me to ride with him on the track while he practices. Also looking to use on trails with the rest of the family. I'm really confused what to buy. I'm reading I should get bigger (24" or 26") but not sure where to begin. I don't want to be too cheap where I will be dissapointed long term at the same time not break the bank. I'm not all that big at 5' 7" @ 130lbs. Any suggestions would be much appreciated.
Thanks in advance.