Well If I got a sport bike first I wouldn't ride it on the street until I learned properly on back streets. But please tell me if this is a mistake. I'am worried about being hurt because I didn't learn right or took it to fast.
And I have never rode a dirtbike just ATV's here and there but I know that doesn't count for anything

The best bike to learn on is the kind of motorcycle you want to be riding long term. If you ultimately want a sport bike, then that is what you should go with. Riding a dirtbike is different so experience you get with that won't translate exactly. People learning to ride in the dirt is better because if you fall it won't hurt as much but riding on dirt, grass or gravel feels VERY different and it is VERY easy to slip. Traction on pavement is much better.
I still recommend the motorcycle safety foundation course but if you want to start reading up and learning some basics now there is some good info over at http://www.motorcyclegiftshop.com/motorcycle_riding.html
PLEASE!

how can i make it street legal?
also a golfcart?

to be legal it must be a model with blinkers/lights/speedo, for example
honda Crf 250 = 250cc standard dirtbike 4 strke , Honda Xr 250 = 250cc 4 strke dirtbike road worthy with light/blinkers etc
in the developing countries cars are swaped for quads but nothing like that in america, i know it sux i used to use mine to go to my friends places and around the roads till i got caught
cheers



If you are a dare devil, get a bike. If not, then get a atv. i find myself being alot more dangerous on my bike then my quad
Also, I've never ridden before and the bike has to be off-road
and it should be $3,500 or less

that is the greatest dirt bike you can get, plus you can choose either the dirt or street legal model, mostly they are the same bike.
This bike can be ridden off road as good as any professional motocross bike, you can jump this bike 30 feet, the suspension can handle it, this bike is very reliable, quick and fast, lightweight, easy to ride and handle, high ground clearance , I'm the same height and it fits me perfect
works perfectly not a problem with it


You should research the facts about the dangers of motorcycles, find out all you can about motorcycle safety and what you can do to reduce the danger. On a dirtbike you won't have to worry about car traffic etc, so it should be safer than a street bike and easier to convince them. Put together a practical argument and present it to your parents (calmly and with respect… you are trying to prove you're responsible, after all =P)
In the meantime, if you don't have a job, get one and start saving up (If you're old enough). You need to prove you can be responsible with this.
If they still say no, well, you're out of luck. You'll have to wait till you're old enough and buy one yourself.





