My mate has 20mm, looks the part but its tight ? been toying with the idea of spacers. Just need him to follow me on a Sunday blast, to see if they cope with the b roads… ? This won’t happen until May on as his gets tucked up for winter…
I’ve also got 15mm on mine. Thought 20mm may behave been a bit much. You think 15mm doesn’t sound much bit when on the car it makes a big difference to how the wheels sit on the car.