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Join Date: Oct 2007
Posts: 363
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16' phone dials
Hi all,
Anyone know why the 16" phone dial wheel offsets are different between the 86 and 87+ model years for the 951? Was it to accomodate ABS? This kind of throws a monkey wrench into my plans for replacing my driver's side rear wheel on my 1987 951. If I were to purchase a rim off an '86, I'd have to get a spacer too... dang it. |
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02-05-2010, 12:07 PM
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Join Date: Jan 2004
Location: Northern Virginia
Posts: 3,347
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In 1987, ABS was introduced to the line. To accomodate ABS, the geometry is different.. (cant recal specifics) but it required a change in wheel offsets. Even if you car wasn't equipped with ABS, the change was made to the line to simplify things.
So.. pre '87 are "early offset" (10-23mm) and 87+ are late offset (52mm or so)
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1970 914-6 Past: 2000 Boxster 2.7, 1987 944, 1987 924S 1978 911SC, 1976 914 2.0, 1970 914 w/2056 |
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02-05-2010, 12:23 PM
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That Guy
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An early offset wheel will stick out too far on a late offset car, a spacer will do you no good.
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02-05-2010, 03:04 PM
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Posts: 363
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Oh crap, you're right td. It would stick out. I went the other way. Thanks for the insight, chaps.
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02-05-2010, 03:52 PM
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All Spooled Up
Join Date: May 2009
Location: Between NE and Central PA
Posts: 2,516
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Maybe you could offset the offset by mounting skinnier tires on the wheels. But then, maybe you still couldn't get enough clearance that way, or wouldn't want to go with skinnier rubber. Just a thought.
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>gray 89 951S - K27/8, MAF, 3" intake, 3" exhaust w/separate waste pipe, 55# inj, late cam; >red 87 924S - chip, K&N, punched-out cat&muffler >black 80 924 - (sold) >maroon 77 924 - auto (sold) |
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02-06-2010, 02:55 AM
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Join Date: Mar 2009
Posts: 40
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Quote:
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02-06-2010, 08:11 AM
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Aren't the ABS brake calipers a different configuration and mounted differently also? Not sure, but maybe something to consider also.
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86 951 blk |
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02-06-2010, 08:24 AM
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That Guy
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Nope, everything is the same except for the hub and spindle. The late, non-ABS spindles have the mounting boss, but they are not machined out.
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02-06-2010, 09:32 AM
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Join Date: Oct 2007
Posts: 363
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thanks for the info, all. Does anyone know where I can find a rear phone dial for an '87 944 Turbo for a reasonable price?
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02-06-2010, 10:15 PM
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Join Date: Feb 2010
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Use this wheel offset calculator to calculate exactly what you are getting into. As long as the tires don't rub, 18 inch should be no problem. There is also a tire calculator on that web site that allows you to input your original wheel/tire combo and get a direct dimensional comparison to the setup you are considering (offset must also be considered).
I put 18" CL55 turbine wheels on my 1999 SL600 and there is no real problem other than a slight rub at full right steering inputs. I could certainly change the tire size and eliminate the rub, but I don't feel a need to. Mine does not have the sport package. Depending on what wheels you choose, you may or may not have to change your lug bolts.
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r4 revolution |
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02-24-2010, 01:42 AM
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The Kraut Burner
The Bratwurst Burner
Das Boost
#3
