I thought a set in 13x7.5 would go nice on my Vaux project, as iv never seen any before. Her is the spec
Rial Challenge 13"x7" wheels £179.00


INFORMATION
RIAL's newly developed a three-piece 13" modular wheels showcases the established company's talents. The wheel has many advantages over similar wheels currently offered on the market.
The main objective of the new design was to optimise weight - weighing in at 4.9kg a wheel (13"x7") but with strength of a wheel twice the weight.
The wheel-center is available in a range of colours, finished in three-layer powder/wet-coating.
The outer rim is clearcoat sealed and a high gloss surface polish can be applied on request.
The three piece design ensures ease of repair and/or change of offset with a standard off-the-shelf tool used on the bolts.
Guaranteed to be perfectly balanced (cyclic tested)
These rims are extremly strong, subjected to over 800,000 load change tests without any cracks whatsoever - far exceeding TÜV-regulations by more than three times!
The wheels have been impact-tested by the German TÜV.
Load approved and certified by German TÜV.
High-grade steel bolts are used throughout giving strength and corrosion resistance.
The three pieces are sealed with o-rings for absolute airtightness - no liquid silicon is used like the lesser wheels on the market.
PCD for Caterhams/Westfields/etc.
Supplied with strong, light alloy wheel nuts (60° eloxy Aluminium M 12 x 1.5, open-ended).
Manufactured under DIN ISO 9001:2000
In summary, perfect quality rims, as you would expect when made in Germany!
Seem to be really light, strong and perfect for track use.
Has any once ever seen or come across them before?