Guide · 9 min read

Alignment for track days: camber, toe and caster

The short answer

Alignment sets the angles of your wheels. Camber is the inward or outward tilt seen from the front, toe is whether the wheels point in or out seen from above, and caster is the tilt of the steering axis seen from the side. For track days, people usually add some negative camber and adjust toe for response or stability, but the right numbers depend on the car, the tires and how you use it.

  • Negative camber keeps more tread on the road when the car leans in a corner.
  • Toe trades straight-line stability and wear against turn-in response.
  • Caster adds steering feel and helps the outside front gain camber as you steer.
  • Have a professional alignment shop set it, and use tire temperatures to fine-tune.
01

Camber: keeping the tread flat in corners

Camber is the tilt of the wheel seen from the front. Negative camber means the top of the wheel leans in towards the car.

In a corner, the body rolls and the tire’s sidewall deflects, so the outside tire tends to roll onto its outer shoulder. Some negative camber pre-tilts the wheel so that, at full cornering load, the tread sits flatter on the road and the contact patch works harder.

There’s a cost. Too much negative camber shrinks the contact patch in a straight line, which hurts braking and traction, and it wears the inner edge of the tire, especially if you drive the car on the road too.

02

Toe: response vs stability

Toe is the direction the wheels point, seen from above. Toe-in means the fronts of the tires point slightly towards each other; toe-out means they point slightly away.

At the front, a little toe-out usually sharpens turn-in, because the inside wheel is already pointing into the corner. It can make the car feel darty on straights. Toe-in at the front calms the steering but can make turn-in lazier.

At the rear, toe-in adds stability under braking and power. Rear toe-out makes the car more eager to rotate and is rarely what a track-day driver wants. Too much toe in either direction scrubs the tires, wearing them faster and costing a little speed on straights.

03

Caster: feel and dynamic camber

Caster is the tilt of the steering axis seen from the side. Positive caster, where the axis leans back, is what almost every car uses. It makes the steering self-centre and gives a heavier, more communicative feel as cornering load builds.

It has a useful side effect: as you turn the wheel, positive caster tilts the outside front tire towards more negative camber. That’s why more caster can let you run a little less static camber. On many road cars caster isn’t adjustable without aftermarket parts.

04

Reading tire temperatures

Temperatures are a guide, not a rulebook. Track layout, driving style and tire construction all change what “good” looks like.

  1. 1Come straight into the pits after a representative session and measure with a probe pyrometer at three points across the tread: inside, middle and outside.
  2. 2Measure all four tires in the same order, quickly, and write the results down with hot pressures.
  3. 3With negative camber, the inside is usually a little hotter than the outside. If the inside is much hotter, camber may be too aggressive; if the outside is hotter, the tire may want more negative camber.
  4. 4A hot middle with cooler edges usually points to too much pressure; hot edges and a cool middle, too little.
  5. 5Make one change, run again and compare. Keep it all on a setup sheet.
05

Practical advice

Start from the car maker’s range or your tire maker’s advice, and talk to an alignment shop that works with track cars. Tell them how much of your driving is on the road, because a setting that’s ideal on track may wear tires quickly on the highway.

Alignment changes when you change ride height, springs or bushings, and after any off-track excursion or kerb strike. Re-check it before the next event.

FAQ

How much negative camber should I run?

It depends on the car, suspension design, tires and how you use it. Ask an alignment shop that sets up track cars, start conservatively and use tire temperatures and wear to fine-tune.

Will a track alignment ruin my tires on the road?

Aggressive camber and toe can wear the inner edges faster on the highway. Many dual-use drivers choose a compromise setting or switch alignments between road and track.

Why does my car follow grooves after an alignment?

Front toe-out and very wide or aggressive tires can make the car sensitive to ruts and cambered roads. A small toe change towards zero often calms it.

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