| Author | Message | ||
| Noelrp (Noelrp)
Junior Member Username: Noelrp Post Number: 179 Registered: 8-2001 |
Philip, You can get the info yourself. Since you have a set of standard 348 wheels, measure the rear wheel's offset & add 25mm. -n | ||
| mike 308 (Concorde)
Junior Member Username: Concorde Post Number: 124 Registered: 8-2002 |
Actually 5 x 4.25 is not all that common. It is found on older Volvos, and a few older Fords. I don't know any other more modern cars that use that pattern, thus there is a rather limited selection available. I wish there were more! Actually, there *are* more outside the U.S., but not here domestically. | ||
| philip (Fanatic1)
New member Username: Fanatic1 Post Number: 11 Registered: 2-2003 |
Yes, actually I am confused a little bit.  I do appreciate all the feedback though. I guess what started all this was that I wanted to shop for aftermarket wheels....of course I found some nice wheels that could be custom made, but with a fairly common 5 x 4.25 lug pattern I was wondering if anyone has had any luck buying wheels "off the shelf". there are some very nice wheels out there, for the fraction of the cost of custom makes, however, on a lot of their application guides, ferrari is not listed....such as the Tire Rack...I'm wondering if some of these wheels may in fact fit my car, but if for some reason the ferrari is just not listed as an application....... ideas? thanks again for all the feedback. | ||
| Terry Limehouse (Terrykarr)
Junior Member Username: Terrykarr Post Number: 58 Registered: 12-2002 |
Well Philip, are you confused yet? | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1455 Registered: 1-2001 |
Terry -- The wheel "width" is measured from bead-to-bead (not outside-to-outside) so you'll be a little off based on your description of measuring the backspace then using the nominal wheel width in the math. Also with your description you need to remove the tire from the wheel to make the measurement (or you'll be a little more off since the tire sidewall protrudes beyond the wheel). An easier and more accurate way to measure/calculate offset IMO (with the tire still mounted) is: 1. lay the inboard tire sidewall against the (flat) ground -- measure the vertical distance from the ground to the wheel mounting plane = backspace 2. lay the outboard tire sidewall against the (flat) ground -- measure the vertical distance from the ground to the wheel mounting plane = frontspace 3. wheel offset = (backspace - frontspace)/2 | ||
| mike 308 (Concorde)
Junior Member Username: Concorde Post Number: 123 Registered: 8-2002 |
Ferrari lug pattern is 5 x 4.25 | ||
| Terry Limehouse (Terrykarr)
Junior Member Username: Terrykarr Post Number: 56 Registered: 12-2002 |
Steve, I'm not sure what you mean about front space, but Philip, lets say your wheel is 7.5 inches wide and you have a back spacing of 5 inches. Take the 5 inches, subtract centerline width of your wheel, which would be half the width [3.75 inches], and you end up with 1.25 inches of positive off set. Hope this helps along with the attachment that Steve posted. | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1454 Registered: 1-2001 |
Yes, if you also measure the frontspace and do the math. | ||
| Terry Limehouse (Terrykarr)
Junior Member Username: Terrykarr Post Number: 55 Registered: 12-2002 |
But if you know the back spacing you can pretty much figure out the off set, right? | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1453 Registered: 1-2001 |
Terry -- the backspace measurement is not equal to the offset (but it is one of the two measurements needed to calculate the offset): offset = (backspace - frontspace)/2 http://www.tirerack.com/wheels/tech/offset.htm The may seem a little weird, but if the 348 speciale wheels increase the 348 track they will actually have less positive offset than a stock 348 wheel. | ||
| Terry Limehouse (Terrykarr)
Junior Member Username: Terrykarr Post Number: 54 Registered: 12-2002 |
Philip, I just purchased a set of wheels off eBay. They are suppose to arrive tomorrow. EBay is a great place to sell and buy, but do your home work before you take the dive. I have purchased everything from a 1:18 scale 58 TR, to a [for real] 2001 IS 300. I've had nothing but good luck. About your wheels, I know the bolt pattern is 108mm, but I'm not sure about the off set. If you lay your wheel down with the back side up, lay a straight edge across the outer most part of the rim and measure from the back side of the bolt flange to the bottom edge of your straight edge, that will give you your back spacing/off set. | ||
| philip (Fanatic1)
New member Username: Fanatic1 Post Number: 10 Registered: 2-2003 |
I may have posted this once...my server is on the fritz, so if it posted, I'm sorry for duplicating..Does anyone know the stock "offset" for the front and rear wheels of a 93 348 Speciale, also what is the lug pattern?? Any help would really be appreciated, as I am shopping for wheels. Also, I have 5 great condition stock 348 wheels........think I'd have any luck on E Bay......I've never used it..... |