I have a 2017 grom and I want to buy new rims for it. The most common size I see is 12x3 for the front and 12x4 for the rear. I can't find what size the stock ones are. I want to make sure I can use my stock tires and don't have to do anything for the speedometer. If anyone could help me out and...

One set of Yoko "Spider" 12' alloy wheels for the Grom / MSX 125 In black or gold ~196 USD + plus shipping ~125 USD by Airmail to the US / Canada Order here: Grom / MSX alloy mag wheels