Alignment Questions

[mike n]

Go ahead and set your toe with an alignment machine with a set of 33's on the truck then put 44's on and the toe will have changed. Trust me, setting toe with one size tire then doing nothing but changing tire size does change your toe number.

I still don't see how, and I've been doing alignments for 23 years. The toe beam that the alignment machine shoots in front of the tire is at a fixed location on the alignment head, and has nothing to do with tire diameter.

I guess we'll have to agree to disagree.

 

[ARAMP1]

Go ahead and set your toe with an alignment machine with a set of 33's on the truck then put 44's on and the toe will have changed. Trust me, setting toe with one size tire then doing nothing but changing tire size does change your toe number.

Changing the tire size will change the difference between the front of the tire distance measurement and the rear of the tire measurement, but it won't change the actual toe in of the vehicle.

Also, all factory manuals that I've seen also have the toe measurement in degrees. I know on the hunter machine that I used to use back in college (I don't recall the model number), you could switch from metric or standard measurement to a degree measurement. For instance, my V3500 calls for 0.07 degree toe in.

 

[tankie88]

metric toe in

Right,seein the toe in data for a 85 blazer M1109 is 1/8th to 1/4th what's that in metric? The young kids here in the UK look at you as if your stupid in the tyre shop when you mention inches.Plus the machines here are in metric now.

 

[sandawgk5]

Well there is 25.4mm per inch so 3-6 mm.

Ira