XRAY - Model racing cars

In another thread, Martin advised to use 3-slot front hexes and 4-slot rears when running the XRAY wheels on carpet/turf.

I've noticed that most of the team's EOS setups run 2-slot front / 3-slot rear.

Is this because the EOS wheels (Schumacher) have a greater offset than the XRAY wheels, or for some other reason?

I read that IFMAR has standardized wheel offsets for 1/10 4WD offroad; does the XRAY wheel conform to this standard (11mm rear / 2mm front measured from outside wheel face to inside hex face)?

It´s depent of what tires/wheels you use.

For example when i use front Schumacher wheels on carpet i run 2 slots.
When i use Xray wheels and ProLine Holeshot then i use minus offset because tire is much wider then wheel.

I think best way is to put your car on wheels with tires and measure maximum width of car.
Then chose offset you need. Every step of offset is 0,75mm

I think limit is 250 mm. Most of time i try to run maximum because it make car more stable.

got it thank you very much for the help!

I realise this is an old post but just wondering if 250mm is the default width for example do you run the front and rear the same widths ? and does this apply to the 2wd and 4wd.
Thanks.