bodilx6 Posted January 11, 2010 Share Posted January 11, 2010 Does anyone have or know where to find these info? http://www.forgeline.com/images/wheel_fitment_diagram.jpg If ordering a set of wheels I want to be sure to hit stock (or close to) offset as well as clearing EU/UK brakes. I would like 8,5" width front and 9,5 maybe 10" rear I know the following: 1+2: width (8,5" front, 10" rear) but what are the individually? 3: looks like the forward protrusion but isn't. As far is I know the forward protrusion is from the hub to the actual wheel? 4, radius: (guessing its half the diameter, so 9") 5, spigot: 60,1mm 6: Looks like the offset but doesn't seem to be measured from the center of the wheel width. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted January 12, 2010 Share Posted January 12, 2010 I'm not sure you're looking into this the right way. Wheel design itself will have a say on whether a wheel will clear the bigger brakes, not just the offset. When I was buying wheels, I used the following tool. http://www.morfed.net/wheel-offset-calculator/ You can put the stock wheel measurements in the first entry, then your new wheel setting in the second. The calculator will tell you how much your inner and outer measurements will change in comparison. Quote Link to comment Share on other sites More sharing options...
bodilx6 Posted January 12, 2010 Author Share Posted January 12, 2010 Thanks mate, thats a cool tool. Yeah, I know the wheel design itself has a lot to say about clearing brakes. Thats why i'm very interested in "3" in the above figure. The forward protusion should tell me how much space there is from the contact point with the hub to the inner side of the spokes, or just the size of the brakes from the hub and out as the figure shows. Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted January 13, 2010 Share Posted January 13, 2010 The value of 1 & 2 individually depends on the offset of the rim you are looking at, for example, a stock Toyota 8.5" front rim ET+50mm. Rim width in metric is 220mm (8.5 X 25.4). Rim centre is 110mm (220mm halved) For these values #1 would be 60mm (110 - 50) & #2 would be 160mm (110 +50) #3 is 39.1mm, stock Toyota rim has 10mm clearance at this point. #4 is 192.5mm, stock Toyota rim has 18mm clearance at this point. 6 is the just the height of the spigot from the mounting face as far as I can see. Quote Link to comment Share on other sites More sharing options...
bodilx6 Posted January 13, 2010 Author Share Posted January 13, 2010 Hey, thanks a lot mate!! A few things though: I just saw that "2" is actually the measure from hub contact point to the wall of the inner fender towards the center of the car and not to the inner side of the wheel. There is nothing about offset in the figure. The diagram below is actually better for that. "3" is really, really good to know and was actually the primary thing I was after along. Espesially since you give me the clearance to the standard wheel (I'm guessing the 10mm clearance is to the inner side of the spokes?) "4"; what are the clearance you are referring to here? Is it so that there is 10mm clearance to the inner side of the spokes at the center of the wheel and 18mm from brakes to the inner side of the spokes at the outer edge of the spokes? http://www.imagewheels.co.uk/images/tech_spec.jpg Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted January 13, 2010 Share Posted January 13, 2010 1 & 2 combined is the maximum theoretical space available for your tyre/rim combination. But bear in mind different brand tyres and rims can vary in their respective catagories to quite a degree in overall width despite displaying identical sizes. That is to say a tyre of 235/40 R17 proportions from one manufacturer might fit the available space whereas a tyre from a different manufacturer but displaying the same size may be just a tad tight. Its just something to keep in mind. #4 is the distance between the hub centre to the outer edge of the brake caliper. The 18mm clearance is the distance between this point on the caliper and the inside of the rim. I posted this in a previous thread of yours, maybe you missed it. http://www.mkivsupra.net/vbb/attachment.php?attachmentid=74033&d=1208177475 Quote Link to comment Share on other sites More sharing options...
bodilx6 Posted January 14, 2010 Author Share Posted January 14, 2010 I must have... Thanks a million. This is VERY good info! Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted January 14, 2010 Share Posted January 14, 2010 You are most welcome Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted January 21, 2010 Share Posted January 21, 2010 #3 is 39.1mm, stock Toyota rim has 10mm clearance at this point. Pedro, can I ask where you got this info from? and is that measurement for the UK spec calipers? Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted January 21, 2010 Share Posted January 21, 2010 Pedro, can I ask where you got this info from? and is that measurement for the UK spec calipers? Check the link in post #6 mate. I can't recall where I found (nearly sure it was this site) it but it is for UK spec brakes yes. Quote Link to comment Share on other sites More sharing options...
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