Ive treated myself as its Christmas to some sport rims I really like

There the 2011/12 alloys

I need to sort out tyres and from wat I've read on here new bolts as well

I'm after the best place to source the wheel nuts and lockers and wat tyres you guys would recormend I run

I'm keen to know the best profile and setup to run on the RR

Many thanks
Neil

what size rim?...


bolts and lock nuts from ebay.. ... - .- -.




Y. O. L. O.
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There a 20" 9.5J

I'll get in eBay now when I searched I found that I need the 06 onwards nuts as I currently have the black nuts on my 04

Thanks
Neil

good job re the nuts

the standard 20'' fullfat size is 255/50/20 which fits a 8.5j rim.. as yours is a 9.5j the 255/50/20 wont fit safely , for this rim you need a wider tyre like the RRS size which is 275/40/20....but now you run into another problem where the overall diameter is smaller by 36mm meaning your speedo will be out ie, at 70mph on your speedo you will be running at 67mph .. if you can find one ,a 285/45/20 tyre will have the same diameter as a 255/50/20 . ... - .- -.




Y. O. L. O.
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Thanks for the info fella

I've found 285/50/20's do u think these would b alright as there just a slightly bigger wall?

Thanks
Neil

those will be 30mm bigger in diameter and will be at 73mph when the speedo reads 70mph but taking into account that speedos read low anyway ,you might get a true speedo reading.. ... - .- -.




Y. O. L. O.
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Original tyres are 255/50/20 with a diameter of 764mm

To keep the same rolling radius you will need to fit 285/45/20 (the diameter is 764mm)

285/50/20 have a diameter of 794mm and at an indicated 70mph on the speedo you will be travelling at 72.74

Last edited by 47p2 on 25th Dec 2011 10:57pm. Edited 1 time in total

Is there a program or link for this I dont mind my speedo being out by reading lower but higher cud b a issue lol

I've tried googling 285's with no joy

What if I run a 275/45 or 275/55 ?? Or even a 60

With 275/45/20 at 70mph on the speedo you will be travelling at 69.27mph
With 275/55/20 at 70mph on the speedo you will be travelling at 74.23mph

Cheers fella

All this talk about nuts and rims makes me feel uneasy..  Ash
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2016 SDV8 AB

^^^ This should ease your pain......

here you go cliffy, you can work it out for your self..


http://www.alloywheels.com/Tyre_Calculator ... - .- -.




Y. O. L. O.
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Running 20"RRS wheels on my 4.4 but have upped the tyre size to 275/45/20. No probs and speedo still spot on

Click image to enlarge

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