Question 1

What is Crank Hub Slip / Engine Timing Issues on the BMW M4?

Accepted Answer

The same S55 crank-hub concern that affects F80 M3s also hangs over the F82/F83 M4, especially on tuned cars making repeated hard launches.

Question 2

What is Adaptive Damper / Top Mount Wear on the BMW M4?

Accepted Answer

Stiff suspension, large wheels, and poor UK roads can leave M4s with worn dampers, noisy top mounts, or poor wheel alignment that chews through tyres.

Question 3

What is Convertible Roof Water Ingress / Module Risk on the BMW M4?

Accepted Answer

The folding-roof M4 Convertible can suffer from blocked drains, wet boot electronics, or roof-cycle faults if the mechanism has been neglected.

Question 4

What is Coolant / Charge-Cooling Leaks on the BMW M4?

Accepted Answer

Turbocharged M4s can lose coolant from expansion tanks, front coolers, or hoses. It is a common nuisance fault on hard-driven examples and should not be ignored.

Question 5

What should I check when buying a used BMW M4?

Accepted Answer

Assume any M4 may have been mapped unless you can prove otherwise

Question 6

What should I check when buying a used BMW M4?

Accepted Answer

Inspect carbon-ceramic brakes very carefully because replacement costs are enormous

Question 7

What should I check when buying a used BMW M4?

Accepted Answer

On convertibles, make sure the roof cycle is smooth and the cabin is dry

Question 8

What years was the BMW M4 made?

Accepted Answer

The BMW M4 was produced from 2014 to 2024.

BMW M4

M4 Reliability & Common Faults

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