Installed 18's car sits high now

[mioprimo]

OD, I did go with the factory size 18's up from. 17's. The Victor Equipment tires are made just for Porsche. It's much easier to get into the car now so I know I am riding higher. I can send a picture if you like? M

[husker boxster]

I notice a difference in ride height when I go from my std 19s down to my 18" snows, so you're probably correct about riding higher when going from 17s to 18s. The 18s you now have should fill out the wheel opening better. Is it that big of a deal? It's not like you put a set of 22s on.

[ekam]

It's an optical illusion since the thicker tires on the 17"s hide the wheel gap better than 18"s.

[blue2000s]

Originally Posted by husker boxster

I notice a difference in ride height when I go from my std 19s down to my 18" snows, so you're probably correct about riding higher when going from 17s to 18s. The 18s you now have should fill out the wheel opening better. Is it that big of a deal? It's not like you put a set of 22s on.

The rolling diameter should be the same when going to a plus sized wheel/tire. Lower profile tire side walls deflect less at the road at a given air pressure. So if you are doing it right, the larger tires should have a slightly smaller sized diameter. This makes them the same rolling diameter. So the larger profile wheel and tire combo should actually fill in the wheel well less than the smaller wheel.

It's probable that if the car is riding higher, the tires are the wrong size.

[mioprimo]

Looks pretty good I just need to get used to the new ride/feel. Fronts are 235/40's and rears are 265/40's.

[Overdrive]

Yes, it does look pretty good.

Just can't figure out that whole thing of you "feeling" higher, especially on spec tires....

[tommy986]

OEM sizes are :
225/40-18 front
265/35-18 rear

The tires you put on are slightly taller.
The fronts are about 1/3 inch taller.
the rears by about 1 inch

[ekam]

Originally Posted by tommy986

OEM sizes are :
225/40-18 front
265/35-18 rear

The tires you put on are slightly taller.
The fronts are about 1/3 inch taller.
the rears by about 1 inch

No these are 986 sizes... 987 tires are taller.