Doing a buddys car.
Previous was on a radial on 19" stock rim.
Car ran great no banging.
Car now has 295/45r17 17" welds and is banging 1st to 2nd.
No other gears. It shifts every gear perfect.
Rev limit in first is 6600 / mph was 30.
I backed it down to 29 no good. Im now going to 32mph to see if it makes a different.. but theres no issues with any other gear so far
Any recommendations?

