Tires OEM BMW or OEM Honda

Swapped my wifes Z4 from runflats to normal.

Pros: better ride, less likely to crack rims, cheaper tyres.

Cons: no spare tyre.

Before I switched I had 4 sidewall tears, one bent wheel, and one cracked wheel. $3000 in damage. After I switched, zero issues a year and a half later. Smoother ride and less road noise too.

For better handling and winter traction, I would consider getting wider tires.

HD thrust arms are an improvement without too much sacrifice. Better shocks as well. I’ve found tires make a huge difference with the E39.

Narrow, low-profile tires aren't as forgiving over potholes, especially when riding on the 20" wheels.

I have a 2005 with just over 75k miles. Bought 5 years ago with 19k miles. I'm averaging 19.64 mpg. Most expensive repair have been 4 new tires after 50k miles.

Those stock tires will give you grief, they give your steering a little annoying dance the closer you hit 170kmph/100mph. Work through those tires. Swapping to something else will almost completely get rid of the wobble.

Finally, check your tire date codes. Tires older than 6 or 7 years are no longer suitable for riding on, as they have lost a lot of their elasticity and therefore grip.

The run flat tires are terrible. They feel like they are made of concrete and the grip is very lacking.

I used to think Honda is great until we had a CRV. It was a piece of crap. It shakes at low speed or highway speed. The dealer was so incompetent and kept asking us to replace tires, wheels all at our own cost but the problem was still there.