I've been thinking of adding spacers to my phone dials. I understand that 21mm is the correct size. What I was wondering is why didn't Porsche include them with the wheels from the factory? Or did they? If I space these PD's out will it cause any problems? Will handeling be effected? Why are the spacers so dang expensive?? Who's done this? Have any advice? Jason

 

Jason,

You may need longer lug studs if you use the 21mm. BTW I have seen used 21mm hubcentric spacers sell at good prices on ebay.

Dennis

 

Only on the 928s

 

jason, i put 43mm spacers on the back of my 79 with the phone dial rims but i did need to roll the fender ever so slightly.

 

Porsche did not think that they needed spacers. Other than looks it makes virtually no difference. The expensive spacers are hub centric and have five additional studs to hold on the wheel. The inexpensive slide on spacers as used in 85-86 on the rear REQUIRES longer studs which are hard to change and somewhat expensive.

 

I fitted 25mm spacers to my 80my rear wheels, about 12 years ago, there still on and no problems in that time, it locates the rear wheels where I think Porsche should have put them, rather than looking a little lost under the arches,.... think I paid around £150 uk approx 80/90 dollars US,.. at the time I thought they were expensive, but were superbly made with built in studs.
Bought them at "Porscheshop" here in UK.

Think Porsche did something about the lack of rear end track, when they introduced the 928 s2,.. these were referred to as "wide track" models here in England.
Ken
80 928s manual
UK

 

Thanks guys. So what is the collective opinion on the size of the spacer. I don't want to have to roll the fenders. I'm planning on running 225 or 235 tires. Did you guys that ran the spacers notice any differences in handling or ride? Jason

 

I run PD's with 21mm spacers on the rears (not on the fronts, God forbid)

I chose 21mm ony because that's what came as an option from the factory.

Still plenty of room for wider rubber, no problem.

I am totally unable to feel the slightest difference in handling...


MM

 

Rear spacers are really just for looks. They should not affect handling in any way.

Dan
'91 928GT S/C

 

MM could you post or email me a pic of your car using the spacer? Also what size tire are you running in the rear with the spacer? Jason

 

Jason - (although it looks like your PD's are 16's) The Blue Car until recently had 15x7 PD's with 32mm hub centrics on the rear and 225's all around. Gave it a far meatier stance and made the tires look much wider, like 245's. No fender rolling at all and actually could have gone another 10mm until fender rolling may have been a consideration.

Old pic my son took with his phone a while ago after he added the spacers - not so good angle, but you can still see that the tire is nearly aligned with the outside edge of the fender. Too bad not from the rear to see the nice width.

 

Snow chains.

 

I was going to ask you why snow chains would make a difference but then I thought it was becasue they would make it to close to the fender to use chains.

 

Nice picture. I think I want to do the 21mm and keep my polished pd's after seeing yours spaced out. What would be a good price to pay for the 21mm spacers? Jason

 

Jason - got them on eBay for $70, but it was over a year ago. I'd expect them to be ~$100 now.

btw - if you lift the rear just off the ground by the A-arm (careful where you position the floor jack), you can use a block of wood to shim under the tire to get the wheel to sit at the correct level. Then get something (I used sprinkler pvc) to slide over at least 3 triangulated studs at 21mm length and upward, to get a near actual view of how far out the tire will sit to the fender. As mentioned, this measurement indicated I could have gone 10mm+ wider, but I chickened out. Ended up better in the long run, since the recent change to 17" TT's made it perfect to the fender with 255's.

Good luck!