2000 S70 Wheel swap from S90?

[dmg4]

Can one use a set of 16" wheels from a 1998 Volvo S90 on a 2000 Volvo S70? I have a set of 4 new snows on the S90 wheels. The mounted tires stand about 1/4" taller than the tires than the S70 15" rims, and are slightly more narrow.

[scot850]

What are the tire sizes? Changing the tire height will affect the speedometer readings, and you will have to check that the tires being taller don't rub anywhere, particularly on the front when turning and against the upper part of the strut.

If my failing memory is correct, the standard S/V70 wheel size is stud pattern: 108mm x 5 stud. I think the offset was 43mm. A lower number will move the tire closer to the strut or inner fender.

Check the rear of the rim (if Volvo OE aluminum) and all the data is usually cast into them. Let us know what it says.

Neil.

[dmg4]

From http://www.wheelfitment.net/volvo

S90 offset = 35 to 45 mm allowable

S70 offset = 35 to 45 mm allowable

So, it would appear both cars have the same range of allowable offset.

Both cars have stock Volvo aluminum wheels. I could not find the wheel data stamped on any of them. Tire sizes are 195/60/15 on the S70, and 205/55/16 on the S90. About 7% error on the speedometer due to differences in rotations per mile. There is a 0.7" difference in tire diameter; thus 0.35" difference in radius. That's not moving the tread much closer to the wheel well or running gear, is it? It seem like a very small difference when compared to normal range of travel of these parts during operation. Any flaws in my analysis?

[misha]

From http://www.wheelfitment.net/volvo

S90 offset = 35 to 45 mm allowable

S70 offset = 35 to 45 mm allowable

ET could be from 35-50.For everything past 50 you would need spacers.
I have a set of factory 16" alloy wheels from 2002 S80 with ET 49 on my 850 with winter tyres.

[scot850]

If you look up the style of the wheel on internet, chances are you will find the rim specs. From the data you gave the 2 cars look to be in the same area for specs. So now try fitting one and see how it goes. Only thing to watch is the wheel hub center. They need to be the same, or as others have sound, if it is too big, it can cause horrible vibrations like the wheels are out of balance.

Fit one at the front, check with the weight on the car that there is no fouling with brake pipes, struts, etc, and then turn lock to lock and check all is good. Then try the rears.

If all is good, learn to live with the in-accurate speedometer.

Good luck,

Neil.

[dmg4]

OK, I have the answer. I searched http://www.wheelfitment.eu/PCD/5x108/65.1.html for all cars with a PCD of 5X108. It lists both the 2000 Volvo S70 and the 1998 Volvo S90. So, we're good on the PCD. The same site (http://www.wheelfitment.eu) also gives 65.1 mm center bore for both cars, and 43 mm offset for both cars. But for the 7% positive error on the speedmeter of the S70 when I'm running the snow tires (the car is going faster than indicated), I'm good to go.

Short answer: yes.