MWS Fitment Guide
Car AC Cars Ace, Aceca & Bristol
Body Saloon and Sports
Engine 2 litre (1971 cc), 2.6 litre, 6 cylinder
Year 1953 - 1964
Wheels
Original XW5786
Rim Size 4" x 16"
Centre 42mm Curly
Number of Spokes 56
Finish Chrome or silver-painted
Lacing Inner & Outer
Inset (mm) 23.6 Outset
Back Spacing (mm) 47 (+/- 3)

Click here to view an explanation of inset, outset and back spacing.
Tyre 550 x 16 crossply or 165R16 radial

The original tyre was the 5.50x16 radial (!) Michelin X
Tube The chrome wheel has always been tubeless. The silver-painted wheel has been tubeless since February 2019. Tubes are only required if fitting tube-type tyres.

If you have the older, tubed wheels or are fitting tube-type tyres you will need 550 x 16 tubes - available with a metal (race) valve or rubber (road) valve - or 165x16 tubes - contact us for price and availability - and we recommend 15"/16" rim bands
Notes Ace and Aceca were originally fitted with 4" x 16", centre laced, 48 spoke wire wheels, which have never been offered by MWS.

A fitment check is recommended when fitting the XW5786 or XW5787 on AC Ace, which had originally been fitted with these 4" x 16" wire wheels.

By 1957 this wheel was replaced by inner & outer laced, 56 spoke wire wheels.

From 1959, 15" wire wheels were offered as an option.

The majority of vehicles were factory fitted with painted (silver, cream or red) wire wheels, however, a few were originally fitted with chrome wire wheels.
OptionsXW5787
Rim Size5" x 15"
Centre42mm Curly
Number of Spokes72
FinishAvailable from stock in silver-painted only. The chrome version of this wheel is only available to special order.
LacingCentre
Inset (mm)35 Outset
Back Spacing (mm) 47.5 (+/- 3)

Click here to view an explanation of inset, outset and back spacing.
Tyre185R15 - we would recommend a fitment check due to possible clearance issues
TubeTubeless

This wheel has always been tubeless. Tubes are only required if fitting tube-type tyres.

If you are using tube-type tyres or wish to fit a tube for any other reason then you will need 175/185 x 15 tubes and we recommend 15"/16" rim bands.
Notes
Notes
WarrantyChrome: two year structural and cosmetic
Painted: two year structural and one year cosmetic

The warranty period commences from the date of invoice and is subject to the wheels being maintained as per our Wheel Care advice and in conjunction with our Terms and Conditions. Please retain the warranty tag supplied with each wheel as it contains the information required to identify the wheel in the event of a claim.

Please note: MWS warranty automatically becomes void if the wheels have been: subject to re-work or change; fitted with tyres other than the manufacturer’s recommended fitment; or used for track events.
Splined Hubs
Option 1AC Cars were originally fitted with drum brakes at the front and rear

By 1959 the front drum brakes were replaced by disc brakes
Option 2Brake drums front and rear:

RSK473 - Front Left
RSK472 - Front Right

RSK475 - Rear Left
RSK474 - Rear Right

Integral fitting hubs so no nuts necessary

Click here for a guide to fitting hubs, caps and centre-lock wire wheels
Option 3Brake discs front and brake drums rear:

RSK461 - Front Left
RSK460 - Front Right

RSK475 - Rear Left
RSK474 - Rear Right

Integral fitting hubs so no nuts necessary

Click here for a guide to fitting hubs, caps and centre-lock wire wheels
Spinners
Code KCK293LH/KCK292RH KCK053LH/KCK052RH KCBR4283L/KCBR4283R
Type Knock-on centre caps Knock-on centre caps Knock-on centre caps
Size 42 mm 42 mm 42 mm
Thread 8 TPI 8 TPI 8 TPI
Ears 2 2 3
Logo AC Plain (no logo) Plain (no logo)
Notes Due to the positioning of the centre in relation to the rim we recommend using our extra-deep 42mm wooden spinner saver to protect the knock-on caps (spinners) when using a copper and hide hammer.

Click here for advice on how tight to apply spinners.
Due to the positioning of the centre in relation to the rim we recommend using our extra-deep 42mm wooden spinner saver to protect the knock-on caps (spinners) when using a copper and hide hammer.

Click here for advice on how tight to apply spinners.
We recommend using our copper and hide hammer to tighten/loosen the knock-on caps (spinners).

Click here for advice on how tight to apply spinners.
Retaining Nuts
 
Extra Information
Other comments

Always check the history of the vehicle to ensure that there have been no modifications to the running gear.

Hubs/splines, spinners and nuts remain the same, unless noted otherwise, regardless of which wheel is fitted.

We also stock wire wheel maintenance accessories such as our Cleaning Kit (Refills available), Cleaning Brush, Degreaser and Tyre Foam.

If you require any more information or advice please contact us:

UK - 01753 ­549 ­360 - e-mail Sales (info@mwsint.com)

Overseas - +44 ­1753 ­598 ­382 - e-mail Isabella (isabella@mwsint.com)
Pictures
XW5786 Silver-painted

XW5787 Silver-painted

AC Aceca fitted with XW5787 Silver-painted