grumpy the 7th Posted September 21, 2005 Share Posted September 21, 2005 OK wheels are 4.25 PCD (hole spacings) but what is the OFFSET???? I know they start with 'ET' & a number. (typically 0 to 30) 2000 1.6 SS (Caterham big brakes on the front & standard rear discs) What OFFSET do I need?? rog C7 TNT - it's Dynamite!(Honda Irish Green and Peugeot Graphite grey) Edited by - roger heeley on 21 Sep 2005 10:25:45 Link to comment Share on other sites More sharing options...
grumpy the 7th Posted September 21, 2005 Author Share Posted September 21, 2005 FOR INFO! CC didn't know what offset the Dedion is. TYRESAVE inform me that the Caterham offset = ET23 rog C7 TNT - it's Dynamite!(Honda Irish Green and Peugeot Graphite grey) Link to comment Share on other sites More sharing options...
Mike Bees Posted September 21, 2005 Share Posted September 21, 2005 It does depend on the rim width. Mike Link to comment Share on other sites More sharing options...
Neill Anderson Posted September 21, 2005 Share Posted September 21, 2005 The offset dimension has nothing to do with rim width, it simply dictates where the wheel and tyre centreline are in relation to the wheel mounting face to the disc/hub. I guess however that you meant that if you want wider wheels you may need less inset, smaller ET number (ie more offset) to ensure clearance at the radius arms etc. For 13" wheels and big brakes then the spoke/caliper clearance will be more important and if the extra offset is created with a thicker nave in the wheel centre then you get more clearance bu a heavier wheel. For steering feel it is very personal, would suggest at least 12mm and probably less than 25mm. My 16" HP are all 19 ET and steering is still tramliney but some of that will be the tyres. On the rear it matters less but have seen anything from ET5 (a lot of offset compared to most but as used on most Ford Escort Mk1/2 rally cars) to same as front. Helps really to ahve front and rears same for ease of thinking at tyre change time! Only my opinion. PS Offset is simple to measure. Take straight edge and measure from wheel mtg face to both the inenr and outer rim face (or tyre sidewall face) and then the offset is simply half of the difference between those. IF the outer dimesnion to the mtg face is the biggest then you have offset or a negative ET. A drawing would be simple but I don't know how to do that on here Neill New 7 Owner 1996 VX 2.0 Link to comment Share on other sites More sharing options...
Mike Bees Posted September 21, 2005 Share Posted September 21, 2005 Yup, the original question was "What offset do I need" - and the offset needed depends on the rim width. Not a great deal of help I admit, since I don't have the actual recommended offsets to hand! Mike Link to comment Share on other sites More sharing options...
Grim Reaper Posted September 22, 2005 Share Posted September 22, 2005 I think these will be what you are looking for... 5.5x13..ET19 6.0x13..ET19 6.0x14..ET19 6.5x15..ET13 7.0x16..ET19 Not sure where I got this from but it's all I have at the moment. I don't think that ET23 will be right though, it will sit the wheel too far into the car with the likelyhood that there will be some contact with something. Link to comment Share on other sites More sharing options...
Mark Ferguson Posted September 22, 2005 Share Posted September 22, 2005 Ring Jon at Millwood he ordered & fitted mine for me 6X13 AT FRONT, 8 X 13 AT REAR, DE-Dion, wheels minilites I would think he should know Link to comment Share on other sites More sharing options...
Mark Ferguson Posted September 22, 2005 Share Posted September 22, 2005 Minilite part no. MA1360B for fronts, MA1380B for rears, dont know if that helps with offset sizing to wheel id ??? Link to comment Share on other sites More sharing options...
Mark Ferguson Posted September 22, 2005 Share Posted September 22, 2005 http://www.minilite.co.uk/magstyle1.html sorry roger should have done my research all at same time wife shouting to me so do something so distracting me Link to comment Share on other sites More sharing options...
grumpy the 7th Posted September 23, 2005 Author Share Posted September 23, 2005 Cheers folks Neil, you've gone to town on this one rog C7 TNT - it's Dynamite!(Honda Irish Green and Peugeot Graphite grey) Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now