Offroad & Cross Country

Sheet 06

Dirt Circuit

Dirt & gravel tracks — AWD & RWD — rally-style tune — more predictable than cross country

Standalone →

Tires

Rally (primary)

Best balance on maintained dirt tracks

Offroad Racing (alternative)

More grip on loose/rough sections

Snow (winter circuits)

Required on snow & ice surfaces

PSI: F 23–26
R 22–25

Lower than road — allows surface compliance

Losing grip on loose surface → drop PSI 1–2 · Surface too rough → switch compound to Offroad Racing

Tire Width

Power	RWD Front	RWD Rear	AWD Front	AWD Rear
Under 300 hp	215–235	245–265	225–245	235–255
300–500 hp	225–245	255–280	235–255	245–270
500–700 hp	235–255	270–295	245–265	260–285
700–1000 hp	245–265	285–315	255–275	275–300
1000+ hp	260–280	305–345	265–285	290–315

Losing traction on loose exits → widen rear 5mm · Digging into rough patches → narrow rear 5mm

Gearing — raise ~0.30–0.50 above circuit equivalent

Under 160 mph	4.50 – 4.90	160 – 180 mph	4.10 – 4.50
180 – 210 mph	3.70 – 4.10	210+ mph	3.30 – 3.70

Bogging through dirt corners → raise FD 0.10–0.20 · Overrevving on straights → lower FD slightly

6-Speed — Under 180 mph

Primary Choice

~200–600 hp

Multiplier0.76

Final Drive	4.40
1st	3.10
2nd	2.36
3rd	1.79
4th	1.37
5th	1.04
6th	0.79

7-Speed — 180–210 mph

High Speed Tracks

~600–1000 hp

Multiplier0.78

Final Drive	4.00
1st	3.20
2nd	2.50
3rd	1.95
4th	1.52
5th	1.19
6th	0.93
7th	0.72

Alignment

Camber

Front	-1.5° to -2.5°
Rear	-1.0° to -1.5°

Understeer on dirt corners → slightly more negative front camber · Rear stepping out → reduce rear camber

Toe

Negative = in · Positive = out

Front	0° to +0.2°
Rear	-0.2° to -0.4°

Poor turn-in on dirt → add front toe-out · Rear stepping out under power → add rear toe-in

Caster

Angle

5.5° to 7.0°

Steering wandering on loose surface → raise caster · Slow self-centering → raise to upper range

Antiroll Bars

Stiffer front = less oversteer · Stiffer rear = less understeer · The gap matters more than the values

Front	22 – 32
Rear	18 – 28
Note	Softer than road circuit

Understeer on dirt → stiffen front ARB · Wheel losing contact on rough patches → soften ARBs

Springs

lbs/in — Ride Height: raise 2–4 clicks

Rear = Front + 20–30 lbs/in · Pick front by weight, add ~25 for rear

Light (<2,600 lbs)	F 175–350 R 200–375
Sport (2,600–3,400)	F 275–475 R 300–500
Muscle (3,400–4,200)	F 400–600 R 425–625
Heavy (4,200+ lbs)	F 550–775 R 575–800

Traction loss on rough patches → soften springs · Bottoming on crests → raise ride height

Rebound

Controls extension speed · Stiffer front = resists dive · Stiffer rear = resists squat

Front	6.0 – 8.0
Rear	5.0 – 7.0

Car wallowing → raise rebound · Front deflecting on gravel → check front rebound

Bump

Controls compression speed · Set bump first · Rebound = bump × 2

Front	3.5 – 5.5
Rear	3.0 – 5.0

Front deflecting on gravel → lower front bump · Rear bouncing on loose surface → lower rear bump

Differential Types

StockLow class / saves PI — limited or no tuning available

RaceRoad circuit — full accel/decel tuning range

RallyDirt circuit — road & dirt optimised, full tuning range

OffroadDirt circuit (alt) — loose surface compliance

DriftRoad drift — high lock bias, sustained slides

DragStraight line only — maximum lock, launch focused

Too much wheelspin on loose sections → try Offroad diff · Set diff type before tuning accel/decel

Aero

Front	Minimum
Rear	Minimum to small amount
Note	Less useful on dirt surfaces

Sliding wide on fast dirt sections → add small rear wing · Losing top speed → remove wing and confirm minimum

Brake

AWD Balance	52 – 58% front
RWD Balance	55 – 62% front
Pressure	90 – 100%

Rear locking on dirt → raise front balance % · Wheels locking too easily → lower brake pressure

Differential

AWD — Front

Acceleration	20 – 30%
Deceleration	10 – 20%

AWD — Rear / RWD

Acceleration	45 – 60%
Deceleration	20 – 35%

AWD — Center

Balance

50 – 55% rear

Wheelspin on loose exits → raise accel · Rear unstable on dirt braking zones → raise decel

Quick Adjustments

Oversteer on loose cornersRaise diff decel / add rear toe in (+0.1°)
Understeer (AWD)Lower front diff accel / soften front ARB

Bouncy over rough patchesLower bump damping on both axles
Sliding wide on exitLower diff accel slightly / stiffen rear ARB

Losing traction on loose surfaceLower tire PSI slightly / switch to Offroad Racing tires
Unstable at high speedStiffen rear ARB / add small amount of rear aero

Sheet 07

Cross Country

Open terrain — jumps & rough ground — maximum compliance — AWD strongly recommended

Standalone →

Tires

Offroad Racing (primary)

Maximum grip on rough & loose terrain

Rally (mixed routes)

If route includes significant road sections

Snow (winter)

Required for snow & ice terrain

PSI: F 18–22
R 17–21

Very low — maximum surface compliance over terrain

Losing grip over terrain → drop PSI further · Wrong surface feel → confirm Offroad Racing compound

Tire Width

Power	RWD Front	RWD Rear	AWD Front	AWD Rear
Under 300 hp	215–235	245–265	225–245	235–255
300–500 hp	225–245	255–280	235–255	245–270
500–700 hp	235–255	270–295	245–265	260–285
700–1000 hp	245–265	285–315	255–275	275–300
1000+ hp	260–280	305–345	265–285	290–315

Digging into soft ground → narrow rear 10mm · Losing traction → drop PSI further before widening

Gearing — raise ~0.50–0.80 above road circuit — top speed matters less than acceleration

Under 400 hp	5.00 – 5.50	400 – 700 hp	4.50 – 5.00
700 – 1000 hp	4.10 – 4.60	1000+ hp	3.70 – 4.20

Losing speed on climbs → raise FD 0.10–0.20 · Overrevving on flat sections → lower FD slightly

6-Speed — Most Builds

Primary Choice

Short runs, high acceleration

Multiplier0.76

Final Drive	4.70
1st	3.10
2nd	2.36
3rd	1.79
4th	1.37
5th	1.04
6th	0.79

7-Speed — High Power

Wide Open Terrain

Long straights & open maps

Multiplier0.78

Final Drive	4.40
1st	3.20
2nd	2.50
3rd	1.95
4th	1.52
5th	1.19
6th	0.93
7th	0.72

Alignment

Camber

Front	0° to -1.5°
Rear	0° to -1.0°

Instability on jumps → move camber closer to 0° · Understeer in corners → add -0.5° front camber

Toe

Negative = in · Positive = out

Front	0° to +0.1°
Rear	0° to -0.2°

Instability over terrain → add small rear toe-in (-0.1°) · Understeer → reduce rear toe-in

Caster

Angle

5.0° to 6.5°

Car wandering at speed on open terrain → raise caster slightly

Antiroll Bars

Stiffer front = less oversteer · Stiffer rear = less understeer · The gap matters more than the values

Front	10 – 18
Rear	8 – 14
Note	Very soft — allows full suspension travel

Wheels lifting on rough terrain → soften ARBs · Excessive body roll → stiffen front ARB only slightly

Springs

Use minimum available · Ride Height: maximum available

Light (<2,600 lbs)	min ~100–200
Sport (2,600–3,400)	min ~150–300
Muscle (3,400–4,200)	min ~275–425
Heavy (4,200+ lbs)	min ~350–550

Bottoming on jumps → raise ride height first · Traction loss on terrain → confirm springs at minimum

Rebound

Controls extension speed · Stiffer front = resists dive · Stiffer rear = resists squat

Front	6.0 – 8.0
Rear	5.0 – 7.0

Car wallowing → raise rebound · Front deflecting on gravel → check front rebound

Bump

Controls compression speed · Set bump first · Rebound = bump × 2

Front	3.5 – 5.5
Rear	3.0 – 5.0

Front deflecting on gravel → lower front bump · Rear bouncing on loose surface → lower rear bump

Differential Types

StockLow class / saves PI — limited or no tuning available

RaceRoad circuit — full accel/decel tuning range

OffroadCross country — loose surface compliance, full tuning range

RallyCross country (alt) — road & dirt compromise

DriftRoad drift — high lock bias, sustained slides

DragStraight line only — maximum lock, launch focused

Mixed road/dirt route → try Rally diff · Losing traction on rough terrain → confirm Offroad diff

Aero

Front	Minimum
Rear	Minimum
Note	Downforce irrelevant on rough terrain

No adjustment needed — keep aero at minimum for all cross-country builds

Brake

AWD Balance	52 – 57% front
RWD Balance	55 – 60% front
Pressure	90 – 100%

Rear locking on loose terrain → raise front balance % · Loss of direction under braking → lower brake pressure

Differential

AWD — Front

Acceleration	25 – 40%
Deceleration	15 – 25%

AWD — Rear / RWD

Acceleration	35 – 55%
Deceleration	15 – 30%

AWD — Center

Balance

48 – 55% rear

Losing traction on steep climbs → raise both front and rear accel · AWD understeer → lower front accel

Quick Adjustments

Bottoming out on jumps / landingsStiffen bump damping slightly / raise ride height further
Bouncing uncontrollablyRaise rebound damping slightly on the bouncing axle

Spinning out on loose cornersRaise diff decel / add slight rear toe in
Understeer (AWD)Lower front diff accel / raise rear center bias slightly

Losing traction on steep climbsRaise both front & rear diff accel / lower tire PSI
Unstable at speed on flat sectionsStiffen ARBs slightly / add rear toe in (+0.1°)

Made by Caspeyy

Last updated: May 25, 2026

Offroad & Cross Country — Combined