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Uk estimated range in miles

Discussion in 'The UK and Ireland' started by Rluner, Sep 14, 2014.

  1. Rluner

    Rluner Member

    Apr 23, 2014
    North West UK
    #1 Rluner, Sep 14, 2014
    Last edited: Nov 10, 2014
    Hi, from the Tesla site, given an S85 with 19" wheels, 10c temp, no air con on with windows up the range calculator at various speed is listed as:-

    50 mph. 332miles
    55 mph. 306 miles
    60 mph. 283 miles
    65 mph. 261 miles
    70 mph. 240 miles

    Assuming an approximate increase in a liner percentage drop of 0.0025% each 5mph (taken from the quoted ones). Don't forget these are compounded from the last drop. I calculated the below:-

    75 mph. 218 miles
    80 mph. 198 miles
    85 mph. 179 miles
    90 mph. 161 miles
    95 mph. 145 miles
    100 mph. 130 miles

    [Updated as requested in another post. Added speeds to 155 mph Re the P85D]

    105 mph. 117 miles
    110 mph. 104 miles
    115 mph. 93 miles
    120 mph. 83 miles
    125 mph. 73 miles
    130 mph. 64 miles
    135 mph. 57 miles
    140 mph. 50 miles
    145 mph. 44 miles
    150 mph. 38 miles
    155 mph. 33 miles

    [Update ended]

    My question is has anyone any actual experience of range at constant speeds of 75 to 100mph, or any insight on how my calculations could be improved/completely recalculated as they are so inaccurate due to some incorrect assumptions?
  2. mgboyes

    mgboyes Member

    Apr 16, 2014
    United Kingdom
    Tesla have published range charts vs speed for the Model S and roadster, and US owners have extrapolated these to higher speeds:


    So your figures are pretty good (at calculating idealised range).

    Driving in the real world on a long journey you can definitely get 250 miles by going at 65mph and taking things smoothly.

    The speedo on the Model S is very accurate and does not over-exaggerate, so when it says 65 (and when range calculations talk about 65) they're talking about a speed that would show as 70 or more on most ICE cars, so 65 feels less slow than you might think.

    My attitude to the car is as follows:
    * 99 days out of 100 I am not going on a long journey so I drive it quickly and make full use of the performance where safe to do so. I don't give any thought to range (or fuel costs which are basically irrelevant), and I don't even look at the energy usage charts or trip meters.
    * 1 day out of 100 I am going on a long journey and I take a completely different approach, relax, cruise at 65-70 and just enjoy the smoothness of it. It's a bit slower, but it really doesn't make much difference and it's a lovely way to travel.

    Range anxiety is a non-issue.
  3. smac

    smac Active Member

    Aug 4, 2013
    I completed a 165 mile trip in my S60 (19" wheels)

    Most was at 70 ish on cruise down the A1 (as has been said other cars who thought they were doing "70" were going slower than me due to the speedo accuracy).

    I range charged before I left, and it showed 183 ideal range. When I got home I had 15 miles remaining.

    I'd expect an 80 to perform equally in being able to meet it's larger range target.

    My Wh/mi are in line with 80 owners when travelling at speed. I suspect I get slightly better readings around town, but this is much more driver dependant, and the small weight saving is easily offset with a heavy right foot.

  4. umar

    umar Member

    Jul 29, 2014
    United Kingdom
    I did a 450 mile round trip from Manchester to London. The "worst" economy was the first part when it was stop start down to Birmingham. From a full charge I managed just 120 miles with 40 left "in the tank". Driving at 80mph+ also had a significant impact on the range.

    I estimate that driving at a constant 70mph would yield over 210 miles.

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