R26 Wheel spacers

Don't know about safer or more reliable. There's not really a lot you can get wrong when machining a wheel spacer, as long as it fits it's good. And as for it being a taboo subject, people hear the opinion of 1 and then copy it. No harm done by spacers imo.

 

The bolt on spacer is much less safer than a simple slipon with longer threads!
The stress (load) that the bolt on ones are subjected to is soo much more intense than for the slip on that they cant even be compared.
The slipon are behaving much stiffer and allow for much less deformatio. Actually the slipon is as stiff as the hub is, while the bolton lowers the stiffnes of the whole system and behaves like a spring actually.

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Well I'm sure they've sold plenty of both and I've never seen any examples of wheel bolts sheering or wheels coming off. It's just forum talk as with a lot of things

 

That is correct! Cheapre here is better. Ie slipons
I made a FE analysis of this and my "assumpsion" was prowed correct.
I am am mag. ing. And have 5 years of structural FE analysis, few published studies in journal's and consortiums.

Edit:
Tho I should really improve my English
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I agree with Milos. My Porsche race car uses cheapo generic alloy spacers with longer studs driven into the hubs i.e. replacing the existing studs. I was a bit weary of this when the car was being built but the outfit that did it have built somewhere around 20 to 30 944 or 968 race cars over the years. A couple of other race outfits I know also used the same cheapo spacers. Never once heard of anyone having a problem with them and that is a lot of race cars over many years.

Keep on top of nut tightness though and regularly check your hubs, which if your tracking your car you should be doing in between each visit to the track. Wheel nuts I torque up/check usually maybe 3 to 4 times of more during a day at the track.

The bolt on spacers are also really heavy.

 

I've got Puremotorsport spacers and stud kit.

 

I have the ktec spacers fitted for nearly 12 months now with no issues. Plus the spacers are made by bimecc not ktec

 

For those interested in spacers you should know that BIMECC spacers are advertised as German TUV compliant and after ordering a set when I asked for the TUV certificate they back-peddled REALLY quickly and admitted they had never been tested and are NOT certificated for use in Germany. They still advertise them as TUV tested but they are NOT. These are made in Italy so it's a case of buyer beware!!!!

 

Just to add.....the H&R bolt on type spacers are weaker than the slip-on style as the bolts holding the spacers (and wheel) on to the hub are only approximately 10mm where the OEM bolts, or better studs to the discs, are approx 16mm. This then means the fixing point of the wheel, tyre and added weight of the spacer is fixed on using a smaller bolt!!

 

Best option if you can afford it .......and don't mind loosing the original style.....

 

Bolt through are definitely a better structural solution. The bolt on with stud type are normally designed for car shows and the like. Hence the smaller bolt diameter. It allows for a variation in PCD and counter sinking centres them. Not a great solution.


RS 175 Cup Lux

 

Can someone post a link to some front spacers for the R26?? Is 10mm the correct size and do the wheels still locate on the hubs at this size ?

 

Go on Puremotorsports website.

 

OK thanks. I may go 10mm front and rear just to give the car a slightly better stance.

 

I've got 10mm on front and 18mm on the rear, using a stud conversion kit as well.

 

I may go for the 5mm slip ons that Pure motorsport sell. Would I need longer bolts aswell for 5mm?

 

Depending where you put them.
On front yes, on rear wheels no

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