perrinsohc Posted August 1, 2011 Share Posted August 1, 2011 Hey guys, Does anyone know what the pcd is of a vauxhall viva/magnum HC. Stud pattern is 4x100. just after some spaces and need to know what to get. Cheers Quote Link to comment Share on other sites More sharing options...
Beaver Posted August 1, 2011 Share Posted August 1, 2011 pcd is stud pattern bud.... Quote Link to comment Share on other sites More sharing options...
fuel Posted August 1, 2011 Share Posted August 1, 2011 PCD/Stud pattern of a Viva is actually 4x4" which is 4x101.6mm. Fitting 4x100mm wheels to your hubs will result in damaged studs. Offset of the factory rims is +31mm from memory. Quote Link to comment Share on other sites More sharing options...
perrinsohc Posted August 1, 2011 Author Share Posted August 1, 2011 PCD/Stud pattern of a Viva is actually 4x4" which is 4x101.6mm. Fitting 4x100mm wheels to your hubs will result in damaged studs. Offset of the factory rims is +31mm from memory. The value I'm after is referring to the thread pattern for the nuts. I hear values of 1.25 and 1.5 which I believe would be the screw pitch. Do you have any idea what that would be for this car? Good point though, never thought about the imperial measurements on the stud pattern, I'll keep that in mind Quote Link to comment Share on other sites More sharing options...
perrinsohc Posted August 1, 2011 Author Share Posted August 1, 2011 pcd is stud pattern bud.... Yup fail haha Quote Link to comment Share on other sites More sharing options...
coldturkey Posted August 1, 2011 Share Posted August 1, 2011 Chances are it will be some imperial thread pitch (if that exists). You can get an idea by measuring like 10 threads with calipers and dividing by 10 etc. Quote Link to comment Share on other sites More sharing options...
Unclejake Posted August 1, 2011 Share Posted August 1, 2011 The stud threads will indeed be imperial, so 1.25 or 1.5 will be incorrect as these are metric thread sizes. I do not actually know, but I would guess that a Viva will use a 7/16th UNF thread..... or possibly 1/2 inch UNF Got a photo of one? Quote Link to comment Share on other sites More sharing options...
perrinsohc Posted August 1, 2011 Author Share Posted August 1, 2011 The stud threads will indeed be imperial, so 1.25 or 1.5 will be incorrect as these are metric thread sizes.I do not actually know, but I would guess that a Viva will use a 7/16th UNF thread..... or possibly 1/2 inch UNF Got a photo of one? Best I could come up with was this photo. I use some pretty standard wheel nut locks for this car. It can't be that uncommon hopefully. Quote Link to comment Share on other sites More sharing options...
vivaspeed Posted August 5, 2011 Share Posted August 5, 2011 They are 7/16" UNF from memory, smaller than Escort which would be (by some dodgy logic) 1/2" UNF. Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted August 5, 2011 Share Posted August 5, 2011 measure the diameter of the stud, 11ish mm is 7/16. and 12.7mm is 1/2 inch. Quote Link to comment Share on other sites More sharing options...
Valiant Posted August 5, 2011 Share Posted August 5, 2011 Your Viva is 7/16 UNF, most English stuff was before they went metric. Escort mk1 was 7/16 mk2 is 12x1.5. Larger US/Austrailian cars are more often 1/2 UNF. You can buy wheel studs/nuts from Blacks Fastners if you need to change them. Quote Link to comment Share on other sites More sharing options...
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