Done a search and a search again, then again... Use to make sure I didnt miss it...

As a rule of thumb, will 13" Pro Race 1.2 alloys fit over front and rear Sierra disks?

I appreciate all may be slightly different, but just as a general rule I wondered if there was certain things that have to be done to the brake setup first???

Yep should do. Mine fitted over them and also over wilwoods I fitted

Great, the idea is to kill the current 15" tyres then replace the wheels and tyres together, or I might sell what's left on my tyres and current 15s lol

Are offsets pretty straight ford along with wheel widths...? I presume 6J at front, and 8J at rear?

What did you opt for? Wasn't keen on buying brand new wheels, as it's just a track goer, but they rarely come up second hand...

I did see advertised on here some smaller rear caliper handbrake springs.
The springs on the rear calipers is the bit that sticks out the most.

I've got sierra h brake calipers on mine, with compo 13" wheels on.

The spring just lightly fouls the wheel.


And I read here on another thread , gts sell modded springs to fix it.

think its something like RJK350 who sells the springs. i bought a set for my 13"'s and fit perfect.

Yep deffo RJK350, had to get some myself to clear 13" pro race 1.2s.

yep they will fit if you remove the handbrake caliper spring it can be replaced with just a nice stiff compression spring rather than an expensive custom made one

Great, thanks everyone for your experiences & input!

Now on the lookout for said wheels... anyone know of any being sold?

lol, wheels are like rocking horse poo, ive been looking for months and months

Ive been looking aswell for the last 2 months, none have come up 2nd hand, might have to buy new ones, about the cheapest ive found are these on ebay, anyone found any cheaper?.

eBay - The UK's Online Marketplace

Try andy at AB Performance or danny at mk sports cars for the team dynamics
george polly motorsport or compomotive themselves for compomotive CXRs

Thanks everyone for your helpfulness )

Hi, anyone fitted rs 4 spokes over sierra discs etc as above? I have a spare set and think they would look more retro than the sierra wheels i have at mo.
Ray

There are some lime green ones on eBay too, I saw them and pondered, but the weight advantage would be my main reason for downsizing to 13s, from 15s, and I doubt those 13s would weigh much less than my current 15s lol