Volusiano wrote:I can back this up. My LEAF's tires barely lasted me 17K miles before I had to replace them due to excessive shoulder wear. I don't drive my LEAF aggressively at all. Had them rotated at 7.5K and 15K per mfg recommendation.Nubo wrote:RLewisCA wrote:...Overinflation will often result in additional cabin noise, as well as inferior cornering, stopping, acceleration and wet performance. Both conditions will likely produce uneven and premature tire wear. Over-inflation in particular will produce premature wear on the center 1/3 of the tread. This can be especially dangerous in wet weather because the car owner may look at the outer tread, see there is sufficient depth to drive safely, however the center of the tread could be almost fully worn, and because the tire is over-inflated, the center of the tread is supporting the most weight and making the most consistent contact with the road.
If driving in wet weather, if the center of the tread does not have sufficient depth to evacuate the water on the road from the tire's surface, this will result in hydroplaning.
The point is - follow the recommended PSI from the vehicle manufacturer, found inside the driver's door jam - not the psi molded onto the sidewall of the tire. Not doing so will most certainly void your tire warranty.
Interestingly, I've read a number of reports of the LEAF OEM tires, at Nissan-recommended pressures, which experienced excessive shoulder wear.
I hear what you're saying, but shoulder wear can result from a number of possible factors, underinflation/overloading being one of them. Other factors include improper alignment (toe in or out, camber positive or negative) or tires being out of balance. So, without an inspection of the tires it would be impossible to determine which was the primary factor, or if it was a combination of two or three of these things. Additionally, the tires on my SL are 'V' speed rated tires. Why, I don't know, since V rated tires are represent a bit of overkill (rated for 149 mph). So, I would not expect them to last much beyond about 20,000 miles if they wear nice and even.
Also, it would not be difficult to calculate the proper tire inflation for an OEM tire to check if the manufacturer's recommended pressures are correct. All you would need is the curb and max weight at each wheel on the Leaf (service manual maybe?), and the tire manufacturer's load chart for the tire (which shows how much weight the tire can support at a variety of pressures).