I searched but the more I read the more I got confused

1) at 10mm is there a solution that uses simply longer bolts + spacers rather than having to add 20 extra bolts and the weight.

2) if not, any recommendation on which ones to buy? I need 10mm rather not go bigger but anything in the 10/12mm range

3) anything to avoid? these seem pretty simple so why not just get a set off ebay instead of the OEM ones?

 

I believe they all just use longer lug bolts. I've never seen one for our cars that require an extra 20 + your existing ones. I had 15mm spacers on my OEM rear wheels, and they only required longer bolts.

https://www.ecstuning.com/b-ecs-part...FQhrfgod74wAZA

 

Just get longer bolts that's how it's done. Weight gain not measurable.

 

For spacers larger than 5mm, make sure that any spacers you get have the hub-centric alignment lip for the wheel hub to engage to aid in centering of the wheel when mounting it. There have been numerous reports of people getting spacers without these having trouble with wheel vibration at speed when they don't get the wheel properly centered during mounting. Always get the correct length of bolt for your spacers, even the 5mm spacers. I marked up a photo for you below showing the lip just for clarity. The ones Code provided a link for are one good choice.

And yes, you only need the type of spacer that use a single set of bolts. The ones with their own bolts are intended for very thick spacers, like those greater than 15mm.

BTW, some spacers also come with two mounting screws to hold them in place on the rotor hat. The OEM 5mm ones do for example. Those are nice in that they won't fall off when you remove the wheel, but they aren't present on many an can be considered optional. Just be careful taking the wheel off, or use the pins I mention below and they can easily fall off.

I also recommend getting two wheel mounting pins like this one also on ECS: https://www.ecstuning.com/b-genuine-...FQcdaQodmkEL2g. With two of these place in the topmost wheel bolt positions, you can easily slide the wheel on with much less risk of hitting the wheel against the caliper and chipping either the wheel and/or caliper. They also help getting the wheel smoothly onto the hub centric lip.

 

Super helpful....I ordered from ECS plus 2 of the mounting screws.

thanks

 

Very glad to help! Looks like a great choice... I bet you'll love the new stance! We'd love to see photos once you have them on.

 

Those mounting pins are a life saver! I'm sooo happy I bought a pair, although I did over pay because I bought the OEM ones from Porsche.

 

is 7/14 the general consensus now for spacer size(s)?

 

This is 100% the most sound piece of advice on this thread. Hub-centric spacers are an absolute MUST as that little lip is no only what centers the wheel on the hub, but is also is responsible for absorbing the majority of the load. Without the hub-centric fitment, the wheel bolts would be supporting the entire load of the car and can sometimes actually stretch/fail.

Evan

 

That seems to be the common guidance to be safe.

However, just FYI, my car has HRE wheels with built-in offsets that are effectively the same as 12 front and 13 rear. I was worried that I'd have scrubbing issues especially with my car having the lower sport suspension but I've had absolutely no problems with it so far, even with coming up diagonally on my driveway with the wheels turned to prevent nose scrape. My front wheels do have a -0.9 camber which may help a little. Note the 12 on the front is unusually high and will increase the tendency to throw stuff up on the hips so I imagine that many here would not recommend it. It does fill out the wheel wells nicely and doesn't stick out.

 

getting a lot of stuff kicked up on the side rockers and/or rear bumper?

 

They are pretty new so I can't really say there is a lot of change but I'd guess eventually there will be a little more. I also just changed the rear hip guards so I should be able to see if I can tell any change to those.

Even with the standard offsets I already had some rock nicks down along the rocker panel and under the bottom edge of the rear (not really visible), so it can't be completely avoided unless you clear bra down there too when the car is new and swap out the bra material occasionally. I avoid fresh gravel-paved roads like the plague in any case and in central Texas we don't get much in the way of winter gravel/sand. Personally, I doubt the extra offset makes a huge difference but I'm sure it is some (25% maybe?). But as I said earlier I know that some will disagree with me on that. I think it looks danged good with those offsets though and I guess I'm willing to tolerate the little extra chip risk down where no one ever sees it anyway. Also FYI, Dr. Colorchip did a good job of making the preexisting rocker chips largely disappear anyway and without getting on your knees and staring at it with a flashlight you'd barely know.

 

I currently have 7/15 which works. However, I will be changing for 15/15 to keep the offset like OEM. Although the 7mm vs 15mm difference is small, I dont want to induce more understeer with the 7mm and 15mm difference. so i'll try the 15mm/15mm and see what happens.

 

He was referring to the bolt on spacers that added a spacer that bolts to the hub with original lugs, then you have to bolt the wheel onto it with 5 more lugs,
old style