Hedman Husler Fenderwell exit headers - Clearance for front tires

I do NOT have those headers, but I do have a car with one tube thru the inner fender, (each side) and one car with custom fenderwell headers very similar to those.
26"tall is pretty close to maximum. My fenderwell car is running 25s (165x15 on 4" rim)
I can run 28" tall on the car with one tube.... but it WILL rub at full lock.