Brake disc size

[wiliferus]

Need to do my front discs, I’ve got a mate with all the kit who’s going to give me a hand at his place.

Ordering the parts on line there are three different sizes of disc. Is there anyway of knowing which size I need without sticking it up on my suicide jack, taking a wheel off and measuring?

It’s a 56 plate V70 D5 (185) AWD.

[Sidecar Man]

Two bits of thin woods through the wheel like a big vernier caliper save you getting the wheel off.

[Pegscratch]

My recommendation would be to source the carriers from the larger (mid-size) disks anyway. It's the only difference on P2 cars. The largest disks are police-spec cars. You are very unlikely to have those.

[Feirny]

Simplest way is to get a tape measure on them and you’ll get a close approx size.

[redandwhite]

VIDA may help give you a guide.

What size options do you have 300/320?

[wiliferus]

redandwhite said:

VIDA may help give you a guide.

What size options do you have 300/320?

285, 305, 320.

Think I’ll just have a wheel off this weekend to be sure.

[Pegscratch]

I'd recommend double checking but I've been told AWDs were all 305 anyway.

[wiliferus]

Pegscratch said:

I'd recommend double checking but I've been told AWDs were all 305 anyway.

That’s helpful info, thanks

[850R]

305mm all day long

For certain it won’t have the later 320mm