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Pauly

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Wheel & Tyre Info - T6 Range

These posts are intended for basic information covering the T6 fleet that should hopefully answer lots of initial questions about sizing and fitment

If you have any info or think anything should be added that could benefit then please post it below and i will edit it to these posts

Wheels

Here are some standard VW wheel sizes
16" Steels - 6.5J x 16 -
16" Alloys - 6.5J x 16 - ET51
17" Alloys - 7J x 17 - ET56
18" Alloys - 8J x 18 - ET50

Wheel Size
Wheel Width
The first number tells you the width of the wheel in inches, standard VW sizes vary from 6.5 up to 8 inches in width, larger sizes are available in aftermarket wheels but you need to make sure these will fit, as a rough guide 9/10 inch is around the max sizes on standard vehicles.

Bead Profile
The letter after the rim width number refers to the bead profile, this is the area of the wheel that the tyre contacts, for most if not all wheels for T6s this will be 'J'

Wheel Diameter
The next number gives you the diameter of the wheel in inches where the bead of the tyre sits on the wheel, this measurement does not include the rim flange

Offset
The final digits listed give you the offset of the rim expressed as an 'ET' figure, offset is the distance in mm between the centre of the wheel and the plane of the hub-mounting surface of the wheel.
As offset increases the wheel will move inwards inside the wheel arch, decreasing offset will move the wheel outwards away from the vehicle.
Offset is generally the most misunderstood part of wheel sizing so here are a few links to pages explaining offset further
Wheel offset information.
Offset - Wheel-Size.com
What is a wheel offset explained

A couple more important figures when looking at wheels are :
Stud pattern, this is normally listed as PCD - All T6s have a PCD of 5x120 (Pitch Circle Diameter)
Centre bore, this is the size of the hole in the centre of the wheel where the spigot fits through - All T6s have a centre bore of 65.1mm, if you use wheels with a different centre bore to this you will require spigot rings

The final important factor when dealing with wheels is the load rating, the load rating of a wheel expressed in kilograms (KGs) is the maximum weight the wheel is rated for, this figure will be given in documentation for the wheel and also stamped on the inside of the rim
The minimum load rating of a wheel will be half the given axle weight for that particular wheel but be aware that axle weight is not half of the vehicle max weight eg a T32 (3200KG) has an axle weight of 1710/1720 KG so minimum load rating would be half of 1720 = 860KG
Load ratings per wheel by vehicle type
T26 = 750KG
T28 = 800KG
T30 = 805KG
T32 = 860KG
 
Tyres

Here are some standard issue VW tyre sizes
16" Steels - 215/65/16
16" Alloys - 215/65/16
17" Alloys - 215/60/17 or 235/55/17
18" Alloys - 255/45/18

Tyre Size

Tyre Width/Cross Section Width
The first number tells you the width of the tyre in millimetres, standard issue VW tyres vary from 215mm up to 255mm in width, the wider the alloy wheel your fitting it to the wider the tyre will need to be

Aspect Ratio
The second numbers tell you the aspect ratio, often referred to as the profile. This is the height of the side wall of the tyre in millimetres but is given as a percentage of the width. In the examples above these vary from 65 down to 45 but this figure can get lower for larger width tyres

Rim Size
The third number is the rim diameter in inches, this is the wheel size the tyre will fit on

Load Index
The final part of tyre selection is the load index, this number indicates the maximum load in kilograms that the tyre can carry, heres some examples of load indexes and the maximum weight that represents
98 = 750kg
99 = 775kg
100 = 800kg
101 = 825kg
102 = 850kg
103 = 875kg

Now cross referencing this with the wheel load ratings in the above post we can see the minimum load ratings required by vehicle type
T26 = 98
T28 = 100
T30 = 101
T32 = 103

Heres a couple of reference websites covering this in more detail

Finally heres a great website that covers wheels and tyres, this site alloys you to input your existing wheel/tyre size along with your prospective wheel/tyre size and compare the results, it covers everything from basic dimensions right up to poke and rolling radius - very handy
Will They Fit | Online Wheel & Tyre Fitment calculator.
 
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