measure from the swing arm pivots to the axle centers when adjusting your belt tension .This will center the wheel and reasonably align it .

make sure your shocks are in good shape and not too stiff as this will cause cupping or wavy wear .

lastly ,if you ride 5000 , 7500 , 10,000 miles on roads that are graded to drain to the shoulder , you will see more wear on the left side .

I stopped racing sport bikes on my Big Inch FXR because I just don't have the heart to make another one of the zitty faced , power ranger kids cry again .

Brendon and Jeremy on the Ninjas their mom bought them are just not good sports or good losers

No, and don't buy a Vespa either, look for an older Kymco cycle, you will see and be seen and more likely to stay alive too. when you sell it you will get most of your money back if you are good to it

I'm sure you ( in all your infinite wisdom and experience ) are far smarter than the collective experience of how many dozens of riders that advise you to start on a modest , used bike rather that a bike that will have you in over your head .

Myself I started on a 60cc in 1967 , rode dirt for 10 years before I got my license .
I had a CR 250 for the dirt and with a decade of experience I got a 350 for a street bike . I actually had several 350s ,XL350 , CB350 and a few RD350 and never felt I sacrificed anything . Oh and I'll add that I crashed probably every one of those bikes . I'm glad I bought them used and was able to turn them around for what I paid for them , if not a few bucks more .
So now I've been riding 47 years or so and I ride 111" ( 1800cc) Harley and I still say a 600 is too much to learn on ,,,,,,, but as I said ,,,,, I'm sure you know way more about bikes and riding than I do .

I can't help but wonder if maybe your mom's boyfriend is trying to get rid of you ?

An R6 is just not a good bike to start on. It's not easy to ride, not forgiving for beginners.

Let's see. The seat is small and hard because in track riding you get some road feedback through your butt. The shocks are very hard so as to keep the wheels on the ground and provide maximum traction in corners. The seating position is extreme, putting a lot of stress on the wrists and lower back, and your visibility isn't the best because you have to strain to keep your head up. The throttle is touchy, not easy to control in small amounts.

But perhaps the biggest problem, for a beginner, is the steering. The steering is very sensitive, almost 'twitchy'. This is, of course, to make it easier to change directions in a hurry. But it also gives a beginner a much bigger chance of ending up in a ditch or wrapped around a streetlight pole. Look at the 'rake', the angle of the forks, on an R6, a standard, and a cruiser, and you can see the difference!

In my own observation, most people who ride supersports don't ride them for the purpose they were built for. They just want them for the look! Just like most dual-sport motorcycles (and 4WD SUVs) never go off road. People just want the look. But a supersport is really impractical for 'general purpose' riding!

Run down to your local motorcycle junkyard (if there's one in your neighborhood) and you'll see a dozen supersports--R6s, R1s, GSX-Rs, CBRs, etc.--with <5000 miles on the clock and the forks bent back against the frame, or one side totally ground off by the street. This is because some young guy with 'testosterone poisoning' just HAD to learn to ride on a supersport!

You move up when you're ready. Not that big a jump from a 500 to a 600 ACCEPT the way each delivers power. The 500 is a twin, powerful enough for what it can do and has nice low-end torque which is good for any starter bike. The 600's are four cylinder machines and the power delivery is higher up in the RPM range with little low end delivery which is not usually a good thing for a beginner.
So you get to guess which one I think you should start off on......

Source(s):

riding/racing for 50+ years