J Henderson

The "ZR" is the tyre's speed rating, but its pretty-much an obsolete term these days so you can just ignore it. You can still see it stamped on some new tyres, but its a throwback to the old way tyre sizes were listed and designated (eg: 195/50VR15, 215/45ZR17 etc). A few years back the system changed to the one we have now where the speed rating became a single letter that is listed after the tyre size (along with the load index number) - eg: 215/45R17 91W. Most tyres on sale today in the 215/45R17 fitment seem to be at least "V" rated (up to 149MPH), which is fine for the IS200 so pretty-much every tyre out there is compatible. Your only real buying decision (apart from brand & price) comes down to whether to go for the "XL" (Extra Load, AKA Reinforced) variants which have stiffer sidewalls that can cope with more weight and don't flex as much. Typically, a load index rating of 87 is a normal tyre in our size and an XL is 91. Hope that helps. :)

Its only clipped onto the parcel shelf, albeit quite tightly. From the back seat of the car, slide a flat-blade screwdriver underneath the plastic housing on one side and pry it upwards, then slide another one in nearer to the middle for more leverage. With a bit of effort you'll eventually pop it loose.