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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: What size disc for 14 and 15 rims
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Thu, 06 February 2003 13:45
 
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Not so sure I agree, Norbie. Ford Falcons had 287mm rotors under 14" rims for many years (at least since the XA), and Allan and I were able to sneak 291mm Supra rear rotors and calipers under some 14" Ford rims, much to our surprise (and joy!). Glenn has managed to get 307mm rotors under his 15" wheels, and somehow I managed to get 330mm rotors under 16".
The main determinants will be:
- wheel offset,
- wheel construction, and
- caliper construction.
Wheels are very important. Some of those chromies are so poorly made that they are incredibly massive and chunky - this eats into the space where the disc and caliper would need to be. Also you need to look at the 'X-factor' of the wheel. A large X-factor allows a lot of space between the caliper and the inside of the wheel face. Silvia wheels are a good example of a wheel with a large X-factor. I think those Supra alloys have a low X factor (from memory).
Caliper construction is also very important. 'Race style' calipers are often of very slimline construction and hence allow a larger rotor to be squeezed in under the wheel. However, I have noticed that some OEM single piston sliding calipers also have a very slimline construction.
For GIN51E, the short answer is it depends.
EDIT: with regard to disc size, I'll point you to the DBA database/product catalogue.
http://www.dba.com.au
[Updated on: Thu, 06 February 2003 13:47]
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