are 17s the biggest rims that will fit ?

[mnext02]

I want full face chrome wheels in the largest size I can get. I think that is 17" . Who will make these in 3 lug?

[jwight]

No idea; I think you'll be looking at Canadian or European sites to find something like that for now. Good luck!

John

PS - try contacting: http://www.flyingtiger.ca/04products/smart.html

[Karl Roth]

from the owners manual pg 75

"The ESP "trademark" will only function properly if you use wheels of the recomended tire size >page 299"

bang blab computers... karl

[smarticus]

The Brabus 112 runs 17's in the front and 18's in the rear, on a lowered suspension. The esp seems to be functional with this imbalanced set, so why would it go crazy with a set of 17's all around? The important thing I think, is to keep the overall dia. really close to stock.

Smarticus

[jwight]

I think somebody posted already that Penske hasn't approved the use of any aftermarket items, including wheels, at this point. So, if you put 'em on and have trouble later I think PAG will deny any warranty coverage.

John

[Fredvon4]

The Speedo sense is from a gear train in the transmission. I expect the output is not a spinning cable to the back of the speedo but a electronic pulse to the ECU and ABS computers... sounds like to adapt to larger or smaller diameter tires a gear change is needed to re-calibrate to a true speedometer indication

ESP is a different animal... each axle has a tone ring and a mag pickup that sends a speed (RPM) signal to the comparison computers. This system is tied into the anti lock brake system. There are also longitudinal and lateral accelerometer sensors in the system... All of these inputs are used to counteract lost traction, under-steer, emergency stopping and several other subtle and not so subtle safety issues...

What I am saying is that while true, tire diameter can be re-calibrated technically to give a true speedometer reading, there is no effective way to compensate for the ESP safety features.... So it is critically important that any tire width changes maintain the factory designed diameters

They are:

The 155x60x15 works out to a diameter of 22.32"---931.8 revs per mile
The 175x55x15 is 22.57"---921.5 revs per mile

So if you do want wider tires on larger diameter rims you must make tire selections that stay very close to the factory diameter/revs per mile setting..... Because there is a slight split in the factory tire diameters it is safe to assume some small error can be compensated for...BUT not much

Think of what happens to a tire as it wears... it decreases diameter and increases revs per mile...thus there is a small range of error that the ESP computers can compensate for

[mfoster]

What do the revs per mile numbers work out to on the pulse rear tire of 195x50x15? On the pulse the 175s go to the front.

[Don R]

If you go 18� there won’t be a profile left!

I have 17� on my 06 Pulse and the rear is a 215/35 profile. BTW They’re a bear to get on the rims... but they sure look pretty.

[bmx43]

Originally Posted by Don R

If you go 18� there won’t be a profile left!

I have 17� on my 06 Pulse and the rear is a 215/35 profile. BTW They’re a bear to get on the rims... but they sure look pretty.

looks cool, but different fitment for '08.

[Gortok]

Those are Lorinser Speedy
They'll be available from the MB of Buckhead (Atlanta, GA) accessories guy soon...