BMW M4 GTS

Lore & Background

In the racing culture that the Forza series paints, the M4 GTS occupies a niche that purists revere: it is the car you build when you care more about how the chassis communicates through the steering wheel than about a top-speed number on a leaderboard. The real M division stripped it down—carbon-fiber roof, lighter body panels, a single turbocharged inline-six tuned for mid-range torque rather than peak horsepower—and the game translates that philosophy into a car that feels alive through every apex.

Within the Forza universe, the M4 GTS tends to show up in higher-tier Horizon events and as a reward or purchase option in the dealership. It is not the headline-grabbing hypercar; it is the car a seasoned driver quietly picks from the list and says, 'Yeah, I'll take that one.' Its presence on the grid signals that the player values driving feel over outright acceleration, and that choice resonates with a large slice of the community who remember the older Forza titles where manual transmission and RWD bias were the default language of competition.

The GTS also carries a certain cultural weight in the franchise. It represents the 'driver's car' archetype that BMW M has championed for decades, and in a game world filled with four-wheel-drive rockets and electric hypercars, it stands as a reminder that two wheels driving, a manual shifter, and a well-tuned suspension can still make a lap time that leaves the crowd cheering.

In Their Own Story

The rain had stopped twenty minutes ago, but the tarmac still held a sheen that made every braking zone a negotiation. You dropped into third, felt the rear tires bite through the damp rubber, and threaded the M4 GTS through the hairpin with a flick of the wrist that would have looked reckless in a four-wheel-drive car. The carbon roof kept the nose planted while the rear stepped out just enough to remind you that this was a two-wheel-drive machine asking for respect. Upshift. Downshift. The six-speed manual clunked with a mechanical honesty that no automatic could replicate. By the time you hit the long back straight and let the turbo spool to full, the car was singing at 7,000 rpm, and the gap to the car ahead had closed to a single car length. You didn't need more horsepower. You needed one more clean lap.

Reader's Guide

BMW M4 GTS, 2015, Class S2. Out of the box the car produces roughly 503 horsepower on a rear-wheel-drive, six-speed manual platform, with a curb weight in the neighborhood of 1,500 kg. Handling in stock trim is sharp and balanced, but the suspension is tuned for general track use rather than the most aggressive racing line, and the stock tires leave grip on the table.

Tuning levers in Forza break into the usual categories. On the engine side you can upgrade the turbo, intercooler, exhaust, cam, crank, pistons, and head, which together can push the power figure well past the stock number while keeping the inline-six's mid-range character. The drivetrain offers transmission ratio shortening, a limited-slip differential, and a clutch upgrade—critical for managing the rear-biased power delivery. Suspension tuning (springs, dampers, anti-roll bars, and alignment) is where the M4 GTS truly comes alive; a stiffer, lower setup transforms it from a track car into a race car. Brakes, tires (street through semi-slick to slick), aero (front splitter, rear wing, diffuser), and weight reduction (removing seats, sound deadening, spare tire) round out the menu.

The trade-off is straightforward: every kilogram you shave and every millimeter of aero you add improves cornering but can make the car twitchier on bumpy surfaces, and a heavily turbocharged six-cylinder loses some of the linear delivery that made the stock car so communicative. Push the power too far and the rear tires become the limiting factor, turning every power-on moment into a traction-management exercise.

Build philosophy: treat the M4 GTS as a driver's instrument—maximize chassis balance and tire grip first, add just enough power to keep the engine in its sweet spot, and let the manual gearbox do the talking.

Did You Know?

• The real BMW M4 GTS was produced in a limited run of 700 units, making it one of the rarer M models of its generation.
• The GTS features a carbon-fiber roof and several composite body panels, which is why it is noticeably lighter than a standard M4 despite similar engine output.
• In the Forza series the M4 GTS retains a six-speed manual transmission, a rarity among modern performance cars in the game and a deliberate nod to the real car's driver-focused identity.
• Because the GTS is rear-wheel drive with no all-wheel-drive option, it demands more active throttle and steering management in Forza's physics model than its AWD competitors, rewarding skilled drivers with faster lap tim