Overtaking and defending cleanly

At corner entry there is exactly one question that decides fault: who had the right to the space at the apex. That is not a matter of opinion. The rule the whole “clean pass or divebomb?” argument turns on is overlap at the turn-in point. Once you know where that line is, fault stops being a judgment call.

When a pass is legal: the overlap test

You earn the right to space at the apex only with significant overlap by the time the defender turns in. The overlap-at-turn-in test and the one-move rule are the backbone of wheel-to-wheel etiquette everywhere these rules are enforced. Front wheels roughly alongside the defender’s rear wheels — helmet level, not nose-to-rear-wing. Front wing to rear tire is not enough. If you have zero overlap at turn-in and dive into a gap that is already closing, the contact is on you.

The iRacing Official Sporting Code frames the rest: it is the faster, overtaking car’s responsibility to complete the pass safely. The slower car’s only job is to hold a consistent, predictable line. So the burden is on the attacker to make the move stick, and “stick” means you can actually stop the car and make the corner — not just get a wheel in.

How to actually complete an overtake

Set the pass up a corner early. The clean pass is rarely the one you start in the braking zone; it’s the one you set up by getting a better exit out of the previous corner so you arrive with a run.

Late-braking on the inside. Get genuine overlap before turn-in, brake later than the defender, and leave yourself enough speed to make the apex. If you’ve got helmet-level overlap and you make the corner, the door has to stay open.
The cutback (switchback). Instead of forcing the inside, let the defender hold the tight line, take a wider entry, and get to throttle first. You give up the apex to win the exit, then pass on the straight that follows. Against anyone who overcooks entry, this is the higher-percentage move.
The outside. Only go around the outside when you have a clear speed advantage and the corner geometry rewards it — it leaves you exposed on the cutback if it doesn’t come off.

Most drivers lose time picking the wrong battle, not because they can’t pass. If a faster car is coming by anyway, don’t fight to a standstill; you both lose time and the train behind catches you. The same logic governs lapped traffic and blue flags — yield predictably and lose nothing.

Divebombs: what makes a lunge a foul

A divebomb is braking far too late from too far back, carrying so much speed you can’t make the apex, arriving with no overlap and running the other car wide. Three things make it a foul together: no overlap at turn-in, can’t make the corner, and forces contact.

A late lunge is not automatically dirty. It’s legal if you have overlap by turn-in and you can stop the car and make the corner without running the other guy off. The difference between a brave pass and a divebomb is whether the car is actually under control at the apex.

If you’ve overcooked it, back out. Brake, let the corner go, and take the exit or the next corner. Bailing costs you one position; the contact costs you both your races and your incident points.

Defending without blocking

You get one move. The one-move rule: you may make a single deliberate move off the racing line to defend, and you must make it before the attacker commits. Move first and it’s defending; move in reaction to where the attacker went and it’s blocking.

Returning to the racing line is allowed — that’s not an illegal second move, it’s taking your line back. But once the attacker has legitimate overlap you must leave at least a full car’s width to the edge of the track through the corner. You can’t squeeze them off. The flip side protects you: if you leave a car’s width and the attacker still runs wide into you, that’s on them.

Moving under braking is the bright line you don’t cross — changing your line once you’re in the braking zone. Watch the common confusion here: turning in toward your apex is not moving under braking. “You didn’t move under braking, you turned in and they punted you” is just taking a corner. Move your line laterally in the braking zone and you’ve fouled.

How to avoid being divebombed

Defend the inside early. Take the inside line into the braking zone before the diver can claim it, so there’s no gap to lunge into.
Decide on the cutback. Defending the inside leaves the exit exposed — that’s the cutback you’re inviting. Either commit to covering the inside and accept you might get switched back, or hold a more defensive entry. You can’t have both.
Hold a predictable brake reference. A consistent brake point makes you readable and shifts fault onto anyone who can’t judge it. See trail braking and pedals for the consistency that makes this possible.
Sometimes just yield. Against a serial diver, give the position cleanly and report it. Let him by and he’ll often crash himself out. Yielding plus a protest beats trading paint every time.

Who’s at fault: the quick checklist

Was there overlap at turn-in? No overlap and a dive into a closing gap — attacker’s fault.
Could the attacker make the corner? Too much speed to hit the apex — attacker’s fault, even with some overlap.
Did the defender leave a car’s width? With legit overlap and no room left — defender’s fault.
Did the defender move in the braking zone? Changed line under braking — defender’s fault.
Did the defender make more than one move? Reactive second move to block — defender’s fault.

If overlap existed, the corner was makeable, a car’s width was there, and nobody moved under braking — it’s a racing incident.

How this hits your Safety Rating

In iRacing, contact and off-tracks feed straight into the incident-point system that sets your Safety Rating. The scale runs from 1x for an off-track, to 2x for a spin or wall contact, to 4x for heavy car-to-car contact. Those points drag your Safety Rating down regardless of where you finish. Clean racing isn’t just etiquette here — it’s the metric that decides which license and which splits you get into. A pass that isn’t there to take costs you more in standing than the position was ever worth.

Frequently asked questions

When is a late-braking inside move a legal pass and not a divebomb?

You earn the right to the apex with significant overlap by turn-in — front wheels roughly alongside the defender's rear wheels, helmet level, not nose-to-rear-wing. A divebomb is no overlap at turn-in, too much speed to make the corner, and forcing contact. Get genuine overlap, be able to stop the car and make the apex, and the door has to stay open.

What's a cutback (switchback) and when should I use it?

Instead of forcing the inside, let the defender hold the tight line, take a wider entry, and get to throttle first — you give up the apex to win the exit and pass on the following straight. Against anyone who overcooks entry it's the higher-percentage move.

How much room do I have to leave when defending?

You get one move off the racing line, made before the attacker commits. Once the attacker has legitimate overlap you must leave at least a full car's width to the track edge through the corner — you can run someone to the edge but not off it. Changing your line inside the braking zone (moving under braking) is the bright line you don't cross.

What do I do against a serial diver?

Hold a predictable brake reference so fault shifts onto anyone who can't judge it, defend the inside early so there's no gap to lunge into, and against a serial diver give the position cleanly and protest — let him by and he'll often crash himself out. Yielding plus a protest beats trading paint.