Gotti wheel codes

[nicallen]

Hi Help with identification please I want to list these split rim magnesium wheels but need some clarification on what the codes mean. I think they are j55A style wheels. They were last used on a 1964 Crossley V8 4S which had Ford running gear.
Gotti Front 2 x 13" x 7.00J
Gotti Rear 2 x 15" x 8.00J

In the centre of the 13’ Fronts it says 40-US
In the centre of the 15” Backs it says 160

What do these numbers mean please.

[nicallen]

Answered my own question - its the offset. Doh!

[MightyBadger]

Rears are 150 not 160 I think.

[nicallen]

I stand corrected the photo confirms it.

Still wondering about the US part in 40-US

Gotti Split rim magnesium alloy front wheels 2 x 13" x 7.00J - Offset 40-US - Stud pattern 4 x 100mm - 57mm centre 9.53 Kg
Gotti Split rim magnesium alloy fear wheels 2 x 15" x 8.00J - Offset 150 - Stud pattern 4 x 100mm - 57mm centre 16.64 Kg

Thanks.

[nicallen]

OK got the correct details now,

Fronts are 2 x Gotti 2 piece magnesium alloy wheels 7Jx13” 40-US 4x101.6 bore 57mm 9.53kg
Rears are 2 x Gotti 3 piece split rim magnesium alloy wheels 8Jx15” 150 4x101.6 bore 60mm 16.64Kg

The 4x101.6 bolt pattern is common to MG, MINI and Pontiac vehicles.
Possible uses - Hill-climb, sprint, historic motorsport, drifting, custom or hotrod.
As seen in the photos the wheel centre fixings, front and the split rim fixings, rear are all nuts and bolts.
The weights are approximate as measured using bathroom scales.
Wheels were on a 60s Crosslé V8 Race car.