AO

You only need about 1mm of clearance. The wheel had better not flex .

If it were my car, I'd probably tap the hard line with a hammer ever so slightly, then inspect for wear from time to time. That's probably a bad thing to do, but...

Alternatively, you could grind the backside of the wheel to get it to fit.

Or get the 3mm spacer - wheelenhancement carries them. Call them.

Kevin Michael

I have some thin spacers you can have, free-o-charge.
Kevin

Courtshark

Hammer is the last option. I'd hate to get even a small kink in that line.

The smallest spacer Wheel Enhancement sells is 4mm. And I ordered them yesterday.

And... I'm no metalurgist... do wheels actually flex? Never had to think about it.

Courtshark

PM sent

Marine Blue

Only the manufacturer can confidently provide the answer if the wheels will flex or not. All metals will yeild at some point, the amount depends on the alloy used and if it was treated in any way.

IMHO it is not worth risking your life, others lives and your sharks future for a set of wheels.

IIRC doesn't Wayne have the same wheels on his shark? I can't remember what diameter he is running but they look sharp!

Courtshark

I agree!

But does he have big reds....

Jadz928

I read ya, bro. My buddy has a set of 19" with 47mm front offset he would sell cheap. There are other 928s with the same wheelset who said they have no problems. I tried them on and it's tight... just not going to risk it.

Courtshark

bump for the update

smudaaar

I didn't think any rims with an offset under 50 would fit in the front of a 928. my 8 1/2's w/a 53 et are flush with my front fender.

Courtshark

Like I said... it will be close. I think/hope that because I used 225/40s on an 8.5" rim that the way the sidewall is pulled in will cancel out the sub-50 offset. Honestly, I dunno! From an eyeball perspective it appears that it will work.

These wheels would definitely fit a non-big red 928. And they may be available to someone with such a vehicle in the very near future if this doesn't work out for me.

Rod Underwood

More than anyone wants to know but...

All materials have a Modulus of Elasticity - the linear relationship - in the elastic range where we hope to operate - between stress (load per unit area) and strain (change in length per unit length), so any load placed on a material will cause it to change shape based on its Modulus of Elasticity. Steel is 29,000,000psi/(in/in).

Bottom line - everything "flexes" under load - changes length and shape ever so slightly. icon107:

Rod

Courtshark

Thanks for the info! Makes sense. That's a LOT of force/pressure. What's the average amount of force/pressure applied to a wheel wrapped in steel-belted rubber when it hits a pothole? Also curious if you have stats on aluminum, specifically, "aircraft grade."

Rod Underwood

9.6-10,000,000 psi/(in/in). Interestingly enough, grade of steel or aluminum has no influence on Modulus of Elasticity. That's why using stronger - more expensive - steel will not solve deflection problems which are directly related/proportional to Modulus of Elasticity.

Rod

dejkorn

Are you still waiting for the spacers? I can't wait to see your new wheels on the car.

Courtshark

They should get here Wednesday. Wheels are "on" the car, but I currently can't move the car out of the garage to get a full car shot because of the caliper rub!