R56, R57 Mini Cooper Car Parts

2007 - 2013

R56, R57

The R56, R57 Mini Cooper is the 2nd generation

The R56 and R57 both run a 4x100 bolt pattern with a 56.1mm hub bore. That's the same pattern as classic Minis and older Hondas. Lug spec is M12x1.5.

Stock base Coopers came on 15s or 16s. Cooper S models shipped on 17x7 wheels. Most owners modifying their R56 land on 17x7.5 or 18x7.5 setups. Tire-wise, 205/45R17 is the go-to for a 17-inch wheel, and 205/40R18 or 215/35R18 are common on 18s. Going wider than 7.5 inches gets tight in the fenders without rolling or pulling, especially up front.

The early R56 Cooper S (2007-2010) uses the Prince N14 turbocharged 1.6L, and it has a rough reputation. Timing chain tensioner failures, high-pressure fuel pump issues, and carbon buildup on the intake valves are all well-documented problems. The 2011+ models got the revised N18 engine, which addressed the tensioner and HPFP concerns. If you're buying used, the N18 is the safer bet. Budget for walnut blasting the intake valves on either motor.

Base Coopers and Cooper S models both use MacPherson struts up front and a multi-link rear. The Cooper S gets stiffer springs and thicker anti-roll bars compared to the base. JCW models add even stiffer tuning. The rear multi-link geometry is pretty good for a small car, but the front strut setup means camber adjustment requires camber plates or slotted top mounts. Stock ride height sits around 5.5 inches of ground clearance depending on trim.

The front MacPherson strut design means lowering the car reduces negative camber unless you add adjustable camber plates. Most coilover kits for the R56 include camber-adjustable top mounts for this reason. On the rear, the multi-link setup holds alignment better through ride height changes, but you'll still want an alignment after any drop. Anything beyond about 1.5 inches of drop starts eating into usable suspension travel fast. The R56 is already a short-wheelbase car, so harsh ride quality shows up quickly.

The R57 is the convertible version of the R56 hardtop. Mechanically, they share the same engines, transmissions, suspension geometry, and bolt pattern. The R57 is heavier (roughly 150-200 lbs more depending on trim) because of the convertible top mechanism and chassis reinforcement. That extra weight shows up in acceleration and handling. Wheel and tire fitment is identical between the two. If you're modifying either one, the parts interchange with very few exceptions.

An intake and a tune are where most people start. The N14 and N18 both respond well to ECU tuning, with gains of 30-40 hp on a conservative map. A cold air intake helps the turbo breathe, and a downpipe or catback exhaust rounds out the bolt-on power trifecta. On the handling side, rear sway bar upgrades tighten up the back end noticeably. Lowering springs are popular for the look without committing to coilovers. Short shift kits are another common early mod for manual cars.