Dinan has announced their tuning program for the new BMW M235i Coupe.

The tuning package includes the Performance Spring Set, Free Flow Exhaust system and DINANTRONICS Performance tuner, bumping the power numbers by 44 horsepower and 77 lb-ft of torque.

Dinan’s Bolt-On Free Flow exhaust system features 16 gauge 304 stainless steel construction measured to exact specifications to ensure the proper fit and will resist corrosion for years to come. This system is designed to add a more aggressive sound under acceleration and more horsepower, while reducing drone inside the vehicle thanks to the incorporation of a Helmholtz chamber. The exhaust gasses exit out of the laser engraved twin 89mm ceramic black or polished stainless steel exhaust tips.


The DINANTRONICS™ Performance Tuner enhances engine performance of the M235i and its Stage 1 DINANTRONICS unit produces 364HP and 407 lb-ft of torque.

Dinan’s Performance Spring Set lowers the M235i by ½” front and 1”rear, preserving suspension geometry and lowering the car’s center of gravity for enhanced handling and driver control. An additional option for this system is the progressive rate bump stops to increase suspension travel. The Dinan springs are CNC wound with high-tensile chrome silicon wire and shot-peened for stress relief to last the life of the car.


The 10% increase in spring rate will reduce the rear suspension compression under acceleration and front suspension compression (or dive) under braking, giving your car a more controlled feel. Reduced body roll makes steering more responsive to driver input and will be noticed at speeds as low as 20 mph, up to the top speed of the vehicle.

READ ALSO: BMW M235i with LSD – Test Drive

“The M235i is one of the most fun R&D vehicles we’ve ever had,” said Dinan Engineering President Steve Dinan. “We’re excited to see where we can push this car and what kind of extra performance we can extract from the N55 and this nimble chassis.”

The kit is now available at www.dinancars.com