Porsche 911 GT3 RS vs McLaren 720S — Which S1 Class RWD vs RWD Is Better in FH6?

Two very different approaches to going fast. The Porsche 911 GT3 RS is RWD with 518 hp, the McLaren 720S is RWD with 710 hp. Here's which one wins — and why.

Putting the Porsche Porsche 911 GT3 RS against the McLaren McLaren 720S is one of those comparisons that doesn't have a clean answer until you've run real laps back to back. The Porsche 911 GT3 RS puts down 518 hp from a 4.0L Flat-6, weighs 1,450 kg, and drives the RWD wheels. The McLaren 720S counters with 710 hp from a 4.0L Twin-Turbo V8 (M840T), tipping the scales at 1,283 kg through the RWD wheels. On paper they look close enough that you'd think it comes down to preference. It doesn't — I've tested both extensively and the gaps are real, sometimes surprising, sometimes exactly where you'd expect.

In FH6 specifically, these two cars interact with the updated physics engine very differently. The tire model changes, the weight transfer rework, the differential behavior — all of it shifts the balance between RWD and RWD in ways that weren't true in FH5. I spent a full evening hot-lapping both on the same circuits back to back, and what I found changed which one I'd recommend depending on what you're trying to achieve.

Porsche 911 GT3 RS — The Porsche Contender

The most extreme naturally aspirated 911 ever — 518 hp, 8,800 rpm redline, and a DRS rear wing from Porsche's GT3 racing program.

The Porsche 911 GT3 RS rewards preparation above all else. You can't improvise a fast lap in this car the way you can in an AWD competitor. Each corner demands a plan: where you'll brake, where you'll turn in, when you'll get back to power. Execute that plan cleanly and the lap time comes. Deviate by even a few meters on the braking point and you're either wide and slow or sideways and slower. FH6's rewind feature is your coach here — nail a corner, rewind to the entry, and try it five different ways to find what the chassis wants. Once muscle memory takes over, the car becomes an instrument for carving lap times rather than an opponent you're wrestling.

Full Specs — Porsche 911 GT3 RS

Pros & Cons — Porsche 911 GT3 RS

Best Events — Porsche 911 GT3 RS

McLaren 720S — The McLaren Contender

710 hp and 1,283 kg make for an interesting power-to-weight ratio. This is the kind of car that makes you look for the long way home.

Slide the McLaren 720S on purpose, not by accident. Initiate with a sharp lift on corner entry — no handbrake, no clutch kick — and the rear will step out progressively. Catch it with throttle, not steering. Counter-steering too aggressively sets up a pendulum that spits you out the other side. Instead, hold a small correction angle and modulate the slide with your right foot. More throttle = more angle, less = the rear tucks back in. FH6's tire smoke in photo mode looks spectacular from this car's rear three-quarter angle, so keep the replay saved.

Full Specs — McLaren 720S

Pros & Cons — McLaren 720S

Best Events — McLaren 720S

Head-to-Head Comparison

Verdict: Which One Should You Pick?

Here's the honest answer after testing both cars back to back on the same circuits. The "better" car depends entirely on what you're driving for.

Pick the Porsche 911 GT3 RS if: you prioritize cornering precision over straight-line speed. you enjoy the challenge of managing oversteer and want the higher skill ceiling.

Pick the McLaren 720S if: you prioritize cornering precision over straight-line speed. you race on tracks with long straights where top speed matters more. you enjoy the challenge of managing oversteer and want the higher skill ceiling.

If I could only keep one, I'd pick the McLaren 720S. Both are competitive in the S1 class meta though, and either one will podium consistently if you build it right. My advice: test both at the Autoshow, run a few laps on your favorite circuit, and trust the stopwatch. The numbers don't lie — even when your heart wants them to.

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