If you read all the reviews on bulbs it is like everything else, some like and some don't.
Another thing to look at is color temperature (K) as the stock bulbs are rated at 3000. Some after market rate their 55watt at ~up to 4000, but ratings are a MFG determined so who knows what you get.
55 watts at 12 volts is a 4.58 amp load, 85 watts is 7 amps, so well within the wires capability to handle the loads. The headlight switch is connected to a relay or it would have to handle headlights (low and high beam) all the markers, dash lights etc.
Some more checking is due to be sure the higher wattage is legal in all states.