981 Road Height

[718as]

Is the rear higher than the front as the profiles are the same, yet the rear tyre is wider, or does the rear suspension sit slightly lower to accommodate?

 

[Patt]

the profile is a percentage of the width - not a measurement

[718as]

So 35mm profile is not the length of the side wall?

[CMA]

Have a read of this:

http://www.blackcircles.com/general/tyre-size-calculator

 

 

 

[718as]

Thanks. So the rear does have a higher side walls as its wider than the front.

265 35 20

235 35 20

[Greenman]

Your original summation was correct the diameter of the rears is greater than the fronts, but given this is how it was designed then it's been allowed for accordingly.

[718as]

thanks, so the rear shocks/springs would be slightly lower.

[Gorsh]

1 hour ago, 718as said:

thanks, so the rear shocks/springs would be slightly lower.

Not necessarily, it depends how Porsche have set the car up, for instance the rear suspension mountings could be at a different height. As with all cars it will be slightly different laden with two heavy passengers, luggage and a full tank than with low fuel level and a light driver.  On a Boxster the front will alter most as fuel and most of the luggage are up front where the occupants are more in the middle.