Hi Pete, I'm glad to assist you. It depends on what goal you want to achieve on the tuning scene. Wheel spacers are used when the offset of the wheel is not ideal for the end package that you want. Whether it's because of too narrow of axles or not enough wheel offset, wheel spacers can put your tires and wheels where you want them to be under your fender. Click and see more details about it on the following link (https://www.carparts.com/blog/?s=wheel+spacers). Once you get the clear intentions/purpose of buying a wheel spacer, please get back to us for the ones you need to order.

Not advised, if needed to push out more go with a 2 or 3 inch spacer

Hi Brandon, I'm glad to assist you. Please use our vehicle selector located at the top of the page. Make sure to enter the exact year, model, submodel, and engine size of your vehicle. Our website will tell you automatically if the part you're looking for will be a guaranteed fit. You can also browse down at the vehicle fitment information section to see more details on the application. I hope this helps and happy shopping.

Hi Ronald, I'm happy to assist you. We currently don't have a wheel spacer that fits your 2006 Porsche Cayenne Turbo S. We suggest that you get those from the local auto parts store. For more maintenance parts, we have a sale on brake parts. Click this link to get one for your vehicle: https://www.carparts.com/search?q=brakes&vehicle[year]=2006&vehicle[make]=Porsche&vehicle[model]=Cayenne&vehicle[submodel]=Turbo_S&vehicle[cylinders]=8&vehicle[liter]=4%2E5 I hope this helps. Enjoy shopping at Carparts.com!