Toe Adjustment

[Don Dada]

Hey guys i need to get my wheels aligned but the shop has the adjustment for toe in degrees and not mm

Any one know how to convert mm to degrees?

I've read up on some stuff but still not sure as some suggest using just the rim diameter but others suggest using the overall tyre diameter....i run 18"gtr wheels 235/40/18 up front and 265/35/18 rear

I plan on running 0* front and 2mm in on each side on the rear

Any links to calculators or such will be appriciated

Thanks

[R33 Eddy]

IIRC you can measure the distance between the front of both tyres and then the distance between the rear of both tyres. the differences is your Toe

in/out.

Hey guys i need to get my wheels aligned but the shop has the adjustment for toe in degrees and not mm

Any one know how to convert mm to degrees?

I've read up on some stuff but still not sure as some suggest using just the rim diameter but others suggest using the overall tyre diameter....i run 18"gtr wheels 235/40/18 up front and 265/35/18 rear

I plan on running 0* front and 2mm in on each side on the rear

Any links to calculators or such will be appriciated

Thanks

[simpletool]

No idea.

But at a guess I'd use the rim radius of ~220mm and then the offset of 2mm, divide 2/220 and use Tan to give 0.5° I have no idea if this seems reasonable. So check.

[Don Dada]

Ok guys this is the info. i aquired and this is what i'm going to use after lots of research...

Firstly you need to calculate the overall rim AND tyre diameter so using a 265/35/18

18" x 25.4 = 457.2mm

2(0.35 x 265) = 185.5mm

Total dia.> 457.2+185.5= 642.7mm

Next i want a toe of 2mm IN on either side so

Deg= 2(mm) x [ 115 / 642.7]

Deg= 0.357* for a toe in of 2mm per side

Toe IN is a positive value and toe OUT is a negative value

There are a couple of ways to calculate this but this method is the simpliest....well for me at least and i should note that you guys need to double check if your alignment shop reads toe in mm or degrees to make sure you are setting up your ride properly because it seems that all the newer machines measure in degrees and not mm.

[R TUNE]

the army use mils for navergation being 6400mils = 360 deg.