As you can see, ... at the same time,

I've owned a stock 1990 with 15" tires,











and also a 1991 with 16" tires that are wider profile tires, and the car itself being lowered with eibach springs, and Bilstein HD shocks...









and I must say, there is a very substantial difference between the two.

The stock one, with the 15''s - rides more softly and serenely, but wallows luridly when caned hard into corners.



And the modified one, has a harsher but not annoying, ride at higher speeds, and I took it once, quite briskly into a decreasing radius turn that felt pretty lurid and on the outer edge of control, until I glanced down at the speedometer and noticed the speed - I was going 90 mph!!!! My god that was amazing!

So that was the car I kept...seen here in its euro clone guise a couple of months ago. The one you saw in West Los Angeles when we met up about a year ago...





So for your car, i'd definately go the 16" route; so long as there is no wheel well scrubbing, I think you'd be ok for that beautiful 780 coupe there should be nothing to worry about, but before you do I'd check with brickboard and sweedspeed...

If THEY give the thumbs up then yes, AND thenyou should see about shocks from Bilstein (HD or Sport- though Sport are almost impossible to get in USA I have heard and they are revalved HD's anyway I think)

and then go to the ipd catalogue and order up sway bars for your Volvo 780 if they still have them.

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)