Running same size tires front and back

[HadesOmega]

I'm trying to build a set of wheels for racing with my Sur Ron Light Bee for mini supermoto races. The tire I'm trying to run is the Dunlop Moto3 racing slick. The wheel set I am building will put me at 17x2.15" front and 17x2.50" rear. The Dunlop Moto3 comes in 90/80/17 Front and 115/75/17 Rear.

I was going to run it just like that but then i notice on their website the Recommended rim size for the 90/80/17 is 2.15" to 2.50". The 115/75/17 is for 2.75-3.50" rims. So I'm a bit of a ways off if I want to use the rear tire. So I was thinking since the front tire falls within the recommended range for my front and rear wheels that I just run the exact same front tire on both rims and just flip the rear tire.

Just wondering if this will work alright? I know motorcycle wheels are generally staggered with the wider wheel being the rear. But to run these tires I don't really have a choice. For a supermoto will this be ok? Since the rim is slightly wider in the rear it would probably lower the profile by a little bit compared to the front. I also noticed the compounds are the same front and rear so it shouldn't matter in regards to the compound.

Here's info on the Moto3
https://www.dunlopracing.com/product/moto3/

 

[bpw]

Pretty different application, but I often run front tires on both ends of my vintage BMW since there are a lot more options in the skinny sizes it needs. Matching front and rear sizes was common back in the day.

The profiles of front and rear tires are different, but no real way to know if it handles nicely without trying. In my case the pointier front tire in back actually makes the bike handle better.

 

[HadesOmega]

Yeah I hear yah about finding skinny tires. Its like the only way to go for minis. Guess we won't know till we try. The good thing is i don't have to worry avoid chain rub.

 

[Map8]

I think you will be OK. IIRC, a lot of fast guys used to run the same size front and rear tires in the SupermotoUSA Mini class on the CRF150R.

 

[HadesOmega]

Cool I will order another front up then. It'll be nice to finally have some real race rubber. Save me some money over getting the rear also. I know I've seen some people running same size tires at the Supermoto USA races. I think flat track bikes run the same size.