How to Multiclass

In multiclass racing, cars from different performance categories share the same track at the same time. A prototype might be lapping 30 seconds a lap faster than a GT car on the same circuit. This creates a constant stream of interactions that, handled well, are seamless — and handled poorly, end races for both drivers. This guide covers what to do and what to expect from both sides of the equation.

For the Slower Car

Your job is not to get out of the way as fast as possible — it's to be predictable. An unpredictable move trying to "help" is more dangerous than simply holding your line.

Hold Your Line Predictably

The single most important thing you can do when being lapped is continue doing exactly what you were doing. Drive your normal line, at your normal speed, through the corner. The faster car has seen you, knows where you're going, and has planned around it. If you suddenly deviate — move offline unexpectedly, lift sharply, or cut to the inside — you destroy the faster car's plan at a moment when they may already be committed. Erratic movement in an attempt to yield is one of the most common causes of multiclass contact.

Never move offline mid-corner to yield. The faster car is already committed to a line based on where you were.

Correct approach Watch how this driver holds their line through the corner while being lapped — the prototype passes cleanly with no drama.
What not to do Here the slower driver darts offline mid-corner trying to help. The faster car has no time to react.

Use Your Mirrors

Check your mirrors at the end of every straight and on every corner exit. Faster classes close quickly — a car that's not visible at corner entry may be right behind you by the exit. The earlier you see an approaching car, the more time you have to make a calm, deliberate decision about where to let them past. Being caught completely unaware leads to sudden reactions, which leads to contact. Make mirror checking a habit, not an afterthought.

A modern prototype can close the full length of a long straight in under three seconds. By the time you spot them in your mirrors, you may have very little time left.

Cockpit view Notice how quickly the LMP2 closes in from behind. By the time the corner arrives, there's barely a second of margin.

Don't Wave Without a Plan

Waving a hand or pointing to the side can mean different things to different drivers, and in the heat of the moment is easily misread. If you point to the right, the faster car may move right — and so might you, because pointing right caused you to look right and drift. If you choose to signal, make it deliberate: lift clearly off the racing line and stay there. An action is more reliable communication than a gesture. When in doubt, do nothing and hold your line.

Pointing left often causes you to look left and drift left — straight into the path of the car you're trying to invite past.

The ambiguous wave A well-meaning wave from the slower driver causes the overtaking car to hesitate and nearly lose the moment entirely.

Complete Your Corner Normally

Never brake early or lift suddenly mid-corner because a faster car is close. The faster car's braking point is calculated based on seeing you maintain your normal speed. If you lift unexpectedly, they may have no room to avoid you — they are already committed. If you genuinely need to yield, the right moment is before the braking zone: move offline on the straight before the corner, let them commit to their line, then follow through the corner behind them.

If you need to yield, do it on the straight before the corner — never mid-corner once a faster car is already committed behind you.

Clean execution The slower car completes the corner on their normal line. The prototype finds a clean gap on the exit without any fuss.
Lifting mid-corner An unexpected lift at the apex puts the faster car in an impossible position with nowhere to go.

Acknowledge the Situation

When you see a blue flag, acknowledge it — either via radio to your spotter, or visibly by moving offline on the next straight. You don't have to yield immediately or sacrifice a corner; you just need to not make the faster car work around a confused, unaware driver. A brief flash of your own headlights back can signal you've seen them. Races are lost when a faster car loses time or has an incident with a slower car who simply had no idea they were there.

Blue flag response Watch how a small offline move on the straight communicates awareness and gives the prototype a clear invite to pass.

For the Faster Car

The faster car bears the primary responsibility for executing the pass safely. The slower car is trying to race their own class — your lap time is not their job to protect.

Anticipate, Don't React

By the time you're closing on a backmarker, you should already know where the pass is going to happen. Watch their lines through the previous two corners. If they're running wide on exits, they'll do it again. If they're defending their class position from another slower car, they may be focused inward and unaware of you. Plan your pass for a point where their line is predictable — usually a long straight or a high-speed section where they have no reason to change direction. Don't arrive at a braking zone and improvise.

The backmarker you're closing on may be fighting for their own class position against another car — they could be far more focused inward than on you.

Reading two corners ahead The prototype driver spots the GT3 two corners out and plans the straight-line pass before they even reach the braking zone.
Reacting too late Here's what it looks like when the faster driver arrives unplanned — a scrappy, risky move that costs time and nearly costs more.

Blue Flag Awareness

Blue flags are shown to a slower car to signal that a faster class car is approaching and they should yield. As the faster car, you should know your series' blue flag rules: some classes are required to yield immediately, others are only required to not actively obstruct. Don't assume a waved blue means the car will move over — watch it actually move before committing to a pass. Marshals show blues early, so you may have a full sector before the interaction happens. Use the time.

Waiting for the move The blue is out, but notice how the prototype holds off until the GT car actually moves offline — not just when the flag waves.

Don't Crowd at Corner Entry

Arriving right on the gearbox of a slower car going into a braking zone is the fastest way to cause an incident. You don't know when they'll brake. Brake points vary by class, by driver, and by whether they're managing traffic themselves. Give them space at corner entry. If you can't make a clean pass before the braking zone, wait for the exit or the next straight. One corner of patience is worth infinitely more than a collision that ends both your races.

You don't know the slower car's brake point. If you can't pass cleanly before the braking zone, wait for the next straight.

Patient approach The LMP2 backs off before the braking zone, lets the GT3 brake on their own terms, and makes the pass clean on the exit.
Too close at turn-in Watch what happens when the faster car crowds the braking zone — the GT driver can't brake normally and contact is nearly unavoidable.

Flash-to-Pass Communication

A brief flash of your headlights on a straight signals to the car ahead that you're there and intending to pass. Don't flash aggressively or repeatedly — one or two quick flashes is enough. Flashing while already alongside communicates nothing useful and may startle the other driver. In low-visibility conditions (night, rain, spray), use flashing earlier to give the slower car more time to see you. Many drivers will move offline immediately after a flash; wait to see whether they do before committing.

Single flash, clean pass One brief flash, the GT car moves right, and the prototype drives through without any drama. This is the ideal interaction.

Patience in Slow Corners

Slow corners are where the speed difference between classes often disappears. A GT car through a tight hairpin may be only a second per lap slower than a prototype — the exit traction from a powerful GT can actually carry it away faster than you expect. Don't attempt passes into very slow corners when you have a much longer braking distance. Stick behind through the slow section, get your momentum right on the exit, and use the following straight where your power advantage is real.

Your power advantage exists on the straight. Slow corners are not the place to use it.

Wait for the straight The prototype sits behind through the hairpin and gets a run on the exit. By the time they reach the next braking point, the pass is trivial.