For street use, your front tire should be at 37-40psi. Although the bike will feel just fine with 32psi in the front, modern radial tires will develop a strange wear pattern with low air pressures, particularly if you ride for long distances on hot days at freeway speeds.
For best handling off-road, reduce your tire pressure to about 20-22 psi front, 22-25psi rear. If you do this, bring a small lair pump to get the tires back up to 37-40 when you get back on the road. Reducing tire pressure for off-road makes a huge difference in the bike's stability.
V-Stroms are an all-purpose bike, so the tire you would choose depends on your purpose. If you want to go to the track,D208s are a good choice. If you ride only on the street and want reasonable mileage and good cornering performance, BT020s area good choice. For 90% street dual purpose where you will only be on dirt roads, no mud, snow, or sand, the Trailwings,Anakees, or Tourances are good choices. For 50% street dual purpose, the TKC80s are a good choice, but they won't work real well in street corners. There's a rider in LA with a 17 tooth countershaft sprocket and Metzeler ME880 tires running at the maximum allowed pressure (55psi), who claims he regularly gets 52-55 mph cruising on the freeway at 75-90 mph indicated. If you're interested in best gas/tire mileage, this is the way to go.
Generic information on tires is here.
Good deals on tires can be found at:
The VStrom electric system is designed with all grounds returned via wires to the battery ground. The frame should never be used as a ground return path on these bikes. Due to the fact that the frame is a mix of aluminum and steel, running current through these parts will result in an electrolytic reaction which will eat away at the frame. All added electrical accessories should have their ground current running through wires to the battery. Thanks to R.Cairns of Oz for pointing out this important fact.
The V-Strom puts out about 380 watts, leaving you about 100 watts of spare power. This is enough for an electric vest, a set of electric grip heaters, and a radar detector. Two electric vests if you turn your grip heaters off.
The V-Strom doesn't really have enough spare electrical power for a pair of driving lights. If you want more light, I recommend the Silvania Silverstars, PIAA, or Plasma Ultra White bulbs. Plasmas are $15 / pair at Walmart.
Use a horn lead wire to attach a couple accessories to your bike, such as heated grips. There's an available plug behind your radiator with orange wires, taped with black electrical tape against one of the wire bundles. Loosen your radiator, find the plug (a flashlight helps), and us an x-acto knife to cut the electrical tape holding the plug to the wire bundle. A needlenose pliers helps to push the male extension onto the female plug. The horn lead, Part #36852-06G00will fit the plug and accepts spade lugs. About $7.
Thanks to R.Cairns of Oz for this.
Some riders are experiencing surging and rough running after filling up their bikes. This can be due to gas sloshing into your evaporative emissions canister, then getting sucked from there directly into the airbox. Here's the solution: