Fine, but otoh I'd say be careful with doing this! EVs have low rolling resistane tyres fitted which don't have the greatest grip in winter as a rule, and adding a couple of psi over the recommended is only going to reduce that grip a bit more! I've seen a recommendation in Ampera manual I think it was, suggesting that winter tyre pressures could be set a couple of psi below the usual summer! Presumably in an attempt to make the tyre less rigid, more supple, and so better able to get some grip in snow etc.Even add a couple of pounds. Used to do this on the Zoe. Would add a couple of m/kWh.