Tire size question - 27's to 32's

[Big Cruiser Guy]

I have a 1986 FJ60 with the stock 2F, 4-speed and gearing. Currently running 27's. Would like to go to 32's. Plenty of room with OME Medium lift front & rear.
Would that affect my gearing, mileage, speedometer accuracy?

 

[snowboardonsnow]

yes all of the above.

 

[Big Cruiser Guy]

yes all of the above.

Alright. Can you suggest some gearing options?

 

[snowboardonsnow]

its a 19% different in your speedometer, when reading apron 50.4 mph you will be going 60mph. You gearing will be the same so won't really effect that, but you will feel you need to re gear. Some stock 4.10s from a 62 would help.
As far as mileage it all depends on how you drive. It will get worse unless you cruise at maybe 80 all day long, but in any case with the 2f does anybody really pay attention to mileage? I mean there really isn't much to count there...

 

[snowboardonsnow]

Gear Ratio Calculator

Select h42 for your tranny, your t-case is all the way at the bottom toyota default all others. it should be 1:1 and 2.28:1
tire sizes and your stock gears are 3.7 on the other side duplicate sept play with gearing and your tire size.

4.11 will be good with 32" tires. But you can get speedo correctors also if you can live with the gearing.
(you can change speeds rpms ect to see what 3.7s will be like) you could live with 3.7s just correct your speedo for the coppers.

Edit: no under drive (unless you have one)