rim offsets

Garry - You seem a little confused over rim offset. There is positive offset, where the centreline of the rim is a distance out from the hub face, there is zero offset where the centreline of the rim is exactly in line with the hub face, and there is negative offset, which is where the centreline of the rim is inside the hub face.

Positive offset is indicated by a "plus" sign, zero offset is indicated by "0", negative offset is indicated by a "minus" sign (this forum programming won't allow me to write the actual plus or minus signs, unless they are followed by a number).

You are indicating a reduction in offset by going from +25 to +10. This will narrow your track by a total of 30mm.

The State you are located in is highly relevant, to know what the local rego laws are regarding track width alterations with the use of aftermarket rims.
As a guide, I seem to recall that 25mm wider track over standard is the maximum allowed in W.A. - I can't say what it is for the other States, because there may be local differences. I do not recall any regulations relating to narrowing of track width.

Can't help with precise advice on the SR5 caliper clearance - but this thread on the Newhilux forum might assist you somewhat.
It appears that you may be able to use +10 offset, it's the rim diameter that usually creates the clearance problems.
You will need to register with the forum to be able to read the thread.

Nehilux forum - Hilux caliper clearance

Cheers, Ron.

Not saying this is the answer, however sometimes it's easier to go with a new axle on the trailer than pfaffing around with different rims.

The other advantage of this is the same offset means the rims & tires are interchangeable - meaning less spares need to be carried ....

Just throwing it out there...

Hi 489,
Wheel offset always seems to confuse people and I stand to be corrected but I think you will find the following:

Going from a +25mm offset to a +10mm offset will increase the track width of the vehicle. It depends on what is meant by "increase". So you have positive offset, zero offset and negative offset as previously stated by others.

Going from your +25mm to +10mm to Zero to -10mm to -25mm in number value movers the rim further outboard from the centreline of the vehicle. In your case going from +25 to +10 means a track width or widening of 30mm which is illegal in most states, but it depends upon type of axle assembly and other conditions.Check with your local roads authority in your state as most have this information in their technical bulletins.

Many people fit rims to clear suspensions so they can fit taller and wider tyres, many of which are illegal fitments. Not good if your insurance company questions it.

A combination of rim diameter and offset will determine if the brake or other components will foul the rim so be careful.

I had a Land Rover Defender which has a +33 standard offset. I fitted +10 offset rims which brought the wheels out from the centre line of the vehicle and increased the track width by 46mm. This meant the truck got covered in mud and stones and junk fell into the brakes which then caught in the discs. Needless to say on my new Defender I will stick with the standard offset.