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Has anyone used wheel spacers/adapters? I would like to bring out the factory wheels on my RX just a bit to fill in the wheel well. Ebay has thousands for sale. I plan to go with a good brand and ones that are hubscentric. I just need to know what size to go with. They go by mm. I'm having a hard time determining what will be the right size... I definately don't want people to tell the wheels are sticking out more than usual, just want it to look stock as possible with a clean look.
it's pretty easy to figure out how thick of a spacer/adapter you'll need. Take a level and put it against your fender standing vertically and once you have it level, measure the distance from your wheel to the level. You can probably run 1/4" no problem but anything more than that you run the risk of not having enough thread left for your lugs to bite on to. You could also buy the ones that have another set of bolts that you bolt your rims to but you'll most likely have to go 1" or bigger or else the spacer won't clear the factory bolts and your rim wont sit flush against the spacer. I've heard of guys cutting their factory studs but I doub't thats something you want to do. i've been running a universal non hub centric 1/4" spacer(out of necessity) on my truck for 2 years now with no problems or vibrations but anything more than that you HAVE to go hub centric. I whipped up a quick sketch of what you do, please excuse the brutalness of it lol. The yellow stick would be your level and the white box by the wheel is the measurement you want. My guess is you'll need atleast an inch to get it flush.
The ones that I installed on the SC, the quality of the aluminum was good. The workmanship was ok, too. The center hub which is a separate piece was machined with good tight tolerance. I can not complain. And they are less than half of the original Japanese spacers. These ones I bought I am sure are made in China.
I too thought of doing this once but worries about difference in lateral force and what kind of effect it will have on my ride and other parts of the car.
As I mentioned earlier, it is almost equal to installing a new set of rims with the bigger offset.
The force applied to the wheels, whether lateral or otherwise is transferred to the hub through friction between the hub face/spacer/rim face. That is why bolt torque is important.