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IMPORTANT: Read all instructions below these tables (scroll down) even if you think you remember how to do this. It will save you time.
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WHEEL INFO (static measurements)
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Inchesmm
Input values into cells with this formatting
Sample
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Measured wheel outside lip diamter (C2C):
15.125384.175
<-- constants, do not edit
Calculated values are in cells with this formatting
Sample
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STRING SETUP, TIRE PRESSURES & OTHER SETTINGS
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STRING SETUP
TIRE PRESSURES
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See instructions below (scroll down). This has to be perfect in height and then side-to-side or you are just wasting your time.
FrontRear
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Measurements for "Top" and "Bottom" are taken just above and below the center cap on the wheel.
New tires:34 psi34 psi
255/40 R18 (99Y) XL
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255/40285/35
285/35 R18 (101Y) XL
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DriverPassenger
Factory 19" Tires (reference only):
33 psi35 psi
225/40-19 (93Y) XL
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Driver Front
Top117.000116.750116.750117.000Top
Pass Front
225/40255/35
255/35-19 (96Y) XL
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Bottom116.500116.500Bottom
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Average side-to-side →
116.750
← ideally, this should match the calculated blue values just above it - all three should be equal.
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Δ from average →
0.0000.000
← Δ from average
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DriverPassenger
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Driver Rear
Top133.500133.500133.500133.500TopPass Rear
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Bottom133.500133.500Bottom
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Average side-to-side →
133.500
← ideally, this should match the calculated blue values just above it - all three should be equal.
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Δ from average →
0.0000.000
← Δ from average
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OTHER SETTINGS
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Yes
← Gas tank full?
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Yes
← Set shocks to full soft?
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Yes
← Disconnect 1 sway bar end link?
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Yes
← Set tire pressures?
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No
← 175lbs ballast in driver seat?
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Date Measured:
Starting MeasurementsTarget MeasurementsActual New Measurements
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RIDE HEIGHT
RIDE HEIGHT
RIDE HEIGHT
RIDE HEIGHT
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Date Measured:
5/28/20215/28/20215/28/2021
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InchesInchesInchesInchesInchesInches
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Notes: Driver Front 13.513.5Pass FrontDriver Front 13.7513.75Pass FrontDriver Front 13.7513.75Pass Front
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Measured from center
Δ0.000.00Δ
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of wheel cap vertically
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upwards to the lowest
Δ0.1250.00Δ
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point of the sheet metal.
Driver Rear 13.2513.125Pass RearDriver Rear 13.2513.25Pass RearDriver Rear 13.37513.250Pass Rear
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CAMBER
CAMBERCAMBERCAMBER
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Date Measured:
5/30/20215/30/20215/30/2021
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DegreesDegreesDegreesDegreesDegreesDegrees
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Driver Front -0.30-0.30Pass FrontDriver Front -0.30-0.30Pass FrontDriver Front -0.30-0.30Pass Front
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Δ0.000.00Δ
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Δ0.000.00Δ
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Driver Rear -1.4-1.40Pass RearDriver Rear 00Pass RearDriver Rear 00Pass Rear
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TOE INTOE INTOE INTOE IN
TOE IN WORKING TABLE
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Date Measured:
5/31/20215/31/20215/31/2021Wheel EdgeWheel Edge
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mmmmmmmmmmmmLeadingTrailingLeadingTrailing
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Notes: Driver Front 1.10-4.30Pass FrontDriver Front 0.800.80Pass FrontDriver Front 0.600.60
Driver Front
37.0036.5090.7090.50
Pass Front
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Positive = Toe IN
Δ-0.20-0.20Δ0.500.20
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Negative = Toe OUT
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Δ0.000.00ΔLeadingTrailingLeadingTrailing
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Driver Rear 0.000.00Pass RearDriver Rear 0.000.00Pass RearDriver Rear 0.000.00Pass RearDriver Rear 82.0080.8082.0080.80Pass Rear
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1.201.20
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Total Toe (mm)Total Toe Radians Total Toe DegreesTotal Toe (mm)Total Toe Radians Total Toe DegreesTotal Toe (mm)Total Toe Radians Total Toe Degrees
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Front-3.2-0.008329-0.4772Front1.60.0041650.2386Front1.20.0031240.1790
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Rear0.00.0000000.0000Rear0.00.0000000.0000Rear0.00.0000000.0000
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FACTORY ALIGNMENT SPECS
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Bentley'sDegreesMillimeters
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FRONTDeg & MinMaxTargetMinMaxTargetMinNotes:
Calculations proven using Right Triangle calculator here. Solves for Toe per-side. Yellow boxes are inputs, green is output.
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Camber:-1° ± 20'-1.67-1.33-1.00n/an/an/a
https://www.omnicalculator.com/math/right-triangle-side-angle
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Caster w/ ± 10° wheel lock:
7° 25' ± 30'
7.927.426.92n/an/an/aFRONT:REAR:
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Caster w/ ± 20° wheel lock:
7° 40' ± 30'
8.177.677.17n/an/an/a
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Toe (per side):
0° 8' ± 3.5'0.19170.13330.07501.61.10.6< Precision reduced because can't measure that precise.
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Total Toe:0° 16' ± 7'0.38330.26670.15003.2712.2761.280< Values are from Right Triangle calulator on internet.
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Bentley'sDegreesMillimeters
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REARDeg & MinMaxTargetMinMaxTargetMinNotes:
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Camber:
-1° 45' ± 15'
-2.00-1.75-1.50n/an/an/a
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Toe (per side):
0° 11' ± 3'0.23330.18330.13332.01.61.1< Precision reduced because can't measure that precise.
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Total Toe:0° 22' ± 6'0.46670.36670.26673.9823.1292.276< Values are from Right Triangle calulator on internet.
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STRING SETUP INSTRUCTIONS
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Step
Description
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1
Disconnect 1 sway bar end link. On the front, disconnect the lower attachment point - you can get it back on with the car on the ground afterwards.
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2
Set shocks to full soft.
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3
Set tires presssures.
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4
Level the floor.
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4a. Place floor tiles on ground where tires will be.
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4b. Find the highest point of the ground using the laser level and T-square thing. 1-3/4" is the height of the laser level. Remember: use 2 tiles under laser level at the tallest corner, shim all others up from there.
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4c. Level them with respect to each other by using floor tiles to shim them up.
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5
Roll car onto floor tiles with "camber plates" (2 tiles with grease between them) under each wheel.