Hey blitz I think u messed up on that link
I am using 90/90/10 front and 130/70/10 rear kenda 413 tires so far so good don't expect to race or get some crazy lean angles with them but on the road there great
Maybe it my phone it just brings me back to this thread
And they are a bit taller the front is tall enough that you need to move the front fender up a screw hole and the back is a bit taller but much better ride
The stock rear tire is big enough, the front is to low and too small. I got a 100 x 80 x 10" Shinko Golden Boy rear scooter tire, road legal, 62mph rated for $30.23 and $16.11 S/H, $46.34 to my door. Wholesale-Cycles, online.
I used all the oem parts, but you have to move the fender up and mount the bottom to the top hole on the fork to raise it. I would put a tube in it if you can, it's tubeless and I polished the inside if the rim and had a tire place put it on & it still leaks where it seals or the valve that I should have replaced and it's a slow leak so I put tire sealer in it and it stopped.
My X18 still has the stock tire which works real good on the road. If I change it, it will be another 50 low profile series tire, that is the height of the tire. I put a taller front cause I put a 1" longer rear shock made from a $30 BMX bicycle shock and a 6" dirt bike shock spring I got online for $10. It was on the bike till I found the bike shock a ChaserTech online. The taller the tire is the more it bends in the corners, I'm on a mountain hwy, 35 to 45 MPH. Most of the time I am wide open. I have 15/28 gears on it now w/ a PBU billet alum rear gear, very high, stock was 17/38.