Significant weight reduction Jon. The OE ones appear to be gas cut from thick steel plate before machining. The centrelock wheel version require a greater inset from stub axle so probably use thicker plate still. The two are shown here with Cain's anodised and helicoiled aluminium (5 stud) version in foreground, with my OE now painted, steel centrelock version behind.

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Cain's ones would fit your car Jon but not enough inset to match disc position on centrelock hubs which require a machined outer edge of 4mm to give clearance to disc inner as well as thicker flange to position caliper accordingly. Bottom line the 5 stub hubs place discs 8mm further outboard each side.

For this reason unfortunately the aluminium ones will be returned.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone