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Wheel Adapter sizes

9

940pusher

Member
Joined
Jul 15, 2011
Location
NJ
Ok so my cousin has a Mazdaspeed3 whick he purchased new rims for. So i ended up with his nice stock rims 18"x7.5 5x114.3. I would like to run them on my 89 240. This bring me to my question. What size adapter could i use? I have found a few sets of adapters but around 32mm-20mm. 32's are cheap but, are they too big? Thanks for any help.
 
Last edited:
Be careful when you order adapters for your wheels: I ordered some to run some 5X108 wheels on a 5X114.3 car and found out the hard way that the wheels have holes for the studs that are too small for the adapters.
 
Otto Mattik said:
Curious if the 8mm(.315") rear offset increase has to do with his particular wheels or is that a general offset to shoot for(providing there's enuf fender room) ?
Click to expand...

To achieve optimal wheel flushness.

Otherwise use a smaller adapter thickness, which would allow a wider tire.
 
Otto Mattik said:
I thought 240 is et20, so 52.5 subtract 20 = 32.5
Click to expand...

That sounds right, if sticking with stock tire diameter, to produce no change in scrub radius, however an 18x7.5" wheel with a tire that isn't stretched might cause clearance issues in front unless even thicker adapters are used.
 
matt b said:
Be careful when you order adapters for your wheels: I ordered some to run some 5X108 wheels on a 5X114.3 car and found out the hard way that the wheels have holes for the studs that are too small for the adapters.
Click to expand...

You should be able to choose the stud size when ordering
 
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