I've never had any luck with spacers!

 

again, you didn't confirm whether or not the wheel/tire was roadforce balanced. Often times a patch can cause a vibration (I hope you used a patch and not a plug!) if you don't road force balance the wheel/tire.

I've had 4 shops balance a tire and I still had a vibration, finally had it properly road force balanced and all was solved. Spacers exacerbate any runout or imbalance such that it makes them move obvious.

 

I also have the 5mm factory spacers and had a puncture in one tire which was repaired, rebalanced and there was no vibration issue. I have previously had the same problem you are experiencing and the remedies are:
1:Check that the spacer has no tolerance - the 5mm porsche spacers are NOT hub centric. The wheel hub sits on the remainder of the hub (10mm less 5mm)
2:Rotate the tire on the rim and re-balance by a professional. Compare where the weights of the wheel balanced at the factory and this is where the weight should be placed on your new balanced wheel.
3:High speed wheel balance (if vibration occurs at around 60mph). I am not a big fan of this but it works.
4:Based on my previous experience, I would never buy wheel spacers again and opt for the offset/rim diameter change. The sport techno wheel has a different offset and wheel width that results in a 6mm front and 8mm rear wheel outer face extension. This wheel is sold as an option when you build the car for $1355.

 

Another trick is to also tighten the wheel down with the car off the ground. That sometimes works to further center a slightly out of center wheel.

 

i rebalanced the tire again and everything seems to be perfect

i will consider changing the repaired tire soon as well

 

Good you got it figured out.

 

when i took the car for a local/very professional tire shop to get it checked, they did the following:

1) they checked all wheels and they were in great condition.

2) they checked the repaired tire and told me that there is no need to change it at all.

3) they performed a road force balancing, and the big surprise while doing that was :

that the two front tires have a minor manufacturing defect causing the slight vibration

what confuses me more that the repaired tire is the right back tire not one of the front ones

and actually now after the road force balancing the car is very stable and there is no vibration at all, but i think i will take it to the dealer and discuss that with them

 

What caused the flat?

 

This !

 

oh, that sucks....

they are replacing the defective tires? right?

 

I have to go and check, i guess they should, tires are only 5 months old

 

there are no acceptable "minor manufacturing defect causing the slight vibration" in a tire as there are no such minor brake or steering defects that are acceptable.

5 months, 30 months... anything that is d e f e c t i v e should be replaced under warranty.


a while ago one of my other cars developed a shimmy. The tires were balanced. the wheels were true.

I insisted that the tire dealer take the wheels off and check for a high spot on the tire...sure enough, they were out of round - all of them to one degree or another. New tires were prorated and balanced and installed for free.
Don't screw around with tires, there is only a maximum of 3 square feet connecting you and your car with the earth and there is nothing minor about anything that can possibly interfere with that connection.

 

thanks rnl, will get it checked ASAP, and will update you guys here