Tyre & Wheel Sizes: Why It’s Important

[Steve (sdh2903)]

You have to watch with the available space behind the wheel. Differing 13s have different clearance. I tried a compomotive cxr and it fitted over golf rear and AP fronts. Whereas a mini lite copy wouldn't fit over the golf without some angry grinder intervention. So its not always a clearcut case of 13s will or won't fit.

[Steve (sdh2903)]

43 minutes ago, TableLeg said:

I'm not familiar with the differences but my brakes are called Hi-Spec 4 pot racing front brakes and it says on the WF site (having just looked) that they do fit 13" wheels apparently.....

 

The 'race' upgrade has bigger vented discs. The standard hi spec 4 pots have solid discs.

[Weekend Warrior]

1 hour ago, TableLeg said:

I'm not familiar with the differences but my brakes are called Hi-Spec 4 pot racing front brakes and it says on the WF site (having just looked) that they do fit 13" wheels apparently.....

I have the red Westfield embossed Hispec Calipers and the pro race 1.2 fit no problem ,as said much better feel with the 13” wheel tyre combo .

[Dave Eastwood (Gadgetman) - Club Chairman]

Those, other than being Westfield badged  are standard Hi Spec Ultralight 4 pot calipers. They are usually no problem under virtually all 13” if used as the factory supplies them, with the normal factory “spec” front discs, for those calipers.

 

The ones known as Hi Spec “Race” Calipers on the WSC site are a different caliper, if I remember correctly they’re a design use on some of the Radical race cars. In Westfield format, they’re a much bigger, chunkier design than the Ultralites, featuring an external fluid Link pipe between the two sides of the caliper, they also run on a vented disc, which I’m sure someone told me was larger diameter than the standard non-vented discs.

 

These are where it gets tricky to make definitive statements, as they may well clear some 13” wheels, (just), but will clash with some designs.

[TableLeg]

6 hours ago, Dave Eastwood (Gadgetman) - Club Secretary said:

Those, other than being Westfield basted are standard Hi Spec Ultralight 4 pot calipers. They are usually no problem under virtually all 13” if used as the factory supplies them, with the normal factory “spec” front discs, for those calipers.

 

The ones known as Hi Spec “Race” Calipers on the WSC site are a different caliper, if I remember correctly they’re a design use on some of the Radical race cars. In Westfield format, they’re a much bigger, chunkier design than the Ultralites, featuring an external fluid Link pipe between the two sides of the caliper, they also run on a vented disc, which I’m sure someone told me was larger diameter than the standard non-vented discs.

 

These are where it gets tricky to make definitive statements, as they may well clear some 13” wheels, (just), but will clash with some designs.

For clarity these are my front brakes...........

[Kingster]

2 hours ago, TableLeg said:

featuring an external fluid Link pipe between the two sides of the caliper, they also run on a vented disc,

Fits the description. 

[Rhett Turner - Black Country AO]

On 17/06/2020 at 05:14, TableLeg said:

For clarity these are my front brakes..

They look like the bigger brakes, so you will probably need to be careful about wheel selection

[Dave Eastwood (Gadgetman) - Club Chairman]

4 minutes ago, Rhett - Joint Black Country AO said:

They look like the bigger brakes, so you will probably need to be careful about wheel selection

Yup, those are the Hi Spec Race Caliper option.