Do Disco wheels & tyres fit RRS 2012?

[3Dee]

Thinking of an easy way to make my rrs ready for winter..and go buy some second-hand complete wheels and winter/snow tyres.
Don't care too much about looks - just practicality. Come spring, I will swap back again.

Any probs with this approach?

[camel_landy]

There are some things to bear in mind:

• Not all Disco rims fit over the brake callipers & if you're running Brembo brakes, NONE of the Disco rims will fit.
• The Disco runs a slightly larger tyre profile, therefore the overall diameter is slightly larger.

So... It is possible but as always, the devil is in the detail.

M

[A.J.M]

Are you sure.

I have just fitted Brembo calipers from a RRS Supercharged and they fit under the standard D3 HSE alloys fine.

[camel_landy]

In theory, RRC502280 and RRC505370 are the only 19" rims which will fit a RRSport with Brembos.

However, I don't know the parts involved well enough to know if there's a difference in spacing when retro fitting a Brembo calliper.

M

[300bhp/ton]

I think the op needs to clarify what "Discovery".

D1 certainly not.

D2 is the right PCD, but the centre bore is too small if memory serves, although you could maybe get the centres milled. Not sure on off set of calliper clearance though.

D3 should fit, but not the 17's and I think the 18's may struggle depending on the brakes and maybe model year.

Also L322 is I think the same PCD, but you'd want to check offset and hub centre.

[A.J.M]

These are what i have fitted to my D3.
They are RRS HSE, V spokes, 19 inch fitted over Supercharged Brembo caliper's.
They fit fine. It's not a huge gap from alloy to caliper but it's big enough not to cause issues.

A set of 4, with good tyres, and 3 spare tyres cost me £225 off Gumtree. I sold the tyres for £250.
Tyres were sold on because the D3 needs 111 rated tyres, the RRS only needs 109 i think. ( Camel, that right? )

[camel_landy]

A.J.M said:

These are what i have fitted to my D3.
They are RRS HSE, V spokes, 19 inch fitted over Supercharged Brembo caliper's.
They fit fine. It's not a huge gap from alloy to caliper but it's big enough not to cause issues.

A set of 4, with good tyres, and 3 spare tyres cost me £225 off Gumtree. I sold the tyres for £250.
Tyres were sold on because the D3 needs 111 rated tyres, the RRS only needs 109 i think. ( Camel, that right? )

Good question on the loading... Pass, I'd have to look it up.

As for the rims, those RRSport V spokes are "RRC505370"... One of only 2x 19" styles that fit over the Brembos (as mentioned earlier).

M

[3Dee]

Thing is, I want to try to sort two problems in one go.
Currently my RRS 2012 (red edition) has the red-edition 'special' 20" rims with Scorpions fitted, and these scorpions look to have only around 2-3 k life in them.

As I am sure many have found, these rims are VERY exposed to even the slightest kerb action as the tyres do nothing in the way of protecting them since they are flush with the rim face and are very low profile, so a rather silly combination and recipe for chewed rims.

So... I have been looking around for a solution to deal with the winter mud & snow if we have any, as I live in a very rural area, AND find a solution to minimise rim damage, which is way too easy for what is supposed to be a capable on/off-road machine.

Thus, I thought of disco wheels (I had a disco 3 a while back and never had rim problems like this!)...

Ideas would be very welcome!

[3Dee]

PS... dealer says put Coopers on to the 20", but I am not so sure that would actually fix the problem properly.

[A.J.M]

Cooper LTZ?

Plenty of guys on the D3/4 forum use them in 20s.

No issues with them for general use, in mud, grass, snow etc.
Clearance is a tad tight, but they don't rub.

If you wish to keep the standard wheels and have 1 tyre for covering all bases. It would be my choice for a 20 inch off road tyre.

[3Dee]

A.J.M said:

Cooper LTZ?

Plenty of guys on the D3/4 forum use them in 20s.

No issues with them for general use, in mud, grass, snow etc.
Clearance is a tad tight, but they don't rub.

If you wish to keep the standard wheels and have 1 tyre for covering all bases. It would be my choice for a 20 inch off road tyre.

Oh I can understand that they seem to have a good reputation for snow etc, BUT I am equally concerned about the rim protection... my rationale was that maybe a smaller rim might give a deeper tyre wall with a similar overall dia to std, and thus better protection for the rims????

[A.J.M]

http://www.disco3.co.uk/forum/topic86712.html?high...
http://www.disco3.co.uk/forum/topic102290.html?hig...

Some pictures of them on 20 inch RRS stormer wheels.
They do seem to sit out and cover the rim a bit.

Does this help?

[3Dee]

A.J.M said:

http://www.disco3.co.uk/forum/topic86712.html?high...
http://www.disco3.co.uk/forum/topic102290.html?hig...

Some pictures of them on 20 inch RRS stormer wheels.
They do seem to sit out and cover the rim a bit.

Does this help?

Good post Alan, but I wonder about them being 45 profile rather than 40's which are on mine. This, I presume might cause the speedo to under-read the real vehicle speed? Mind you, I don't know by how much?

[3Dee]

I have just found this... a reply form Cooper themselves... Shame!

"Certainly I can answer one of the two points your dealer has told you. Point no.2 where he says that the 275/45 R20 would not change the speedo accuracy, isn’t strictly true. The difference on rolling circumference of the two sizes is 3.78% (2287mm to 2383mm). This is outside of the maximum 2% that we would recommend when changing the tyres on your vehicle. It equates to an error in speedometer reading of 2.65mph (the speedo would be reading 72.65mph when you were travelling at 70mph).
This is a modification, we would not recommend. Unfortunately, there isn’t a 20” tyre in our range that we would recommend as a fitment that would be within the tolerance."

So...what are my alternatives?

Seems that the idea behind finding 19 inch rims might be the better route?

[A.J.M]

Cheapest way could be to just buy a set of winter tyres and swap them onto the current alloys on the car.

Or go the 19 inch route, but could be more expensive unless you can get a set cheap enough and the tyres at a good price.