Another tyre question

Discussion in 'Motorhome Chat' started by laneside, Jun 3, 2013.

  1. laneside

    laneside Funster

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    Our Rapido currently runs on 215x70R15CP 109 tyres

    The rear axle always runs up to its 2000Kg limit (perhaps a tad over)

    The speedo, according to Tom Tom, is about 8% fast

    The question is will there be any advantage/disadvantage in replacing them with

    225x70 ?
     
  2. Nigel&Debbie

    Nigel&Debbie Read Only Funster

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    At present, your tyres are rated to carry up to 1030kgs each (109 rating). The actual side wall depth or your tyres are 150.5mm (215 x 0.70).
    If you change to 225x70, your load rating will be dependent on tyre type. However, the actual side wall depth of the tyre will increase to 157.5mm(225x0.70). This will increase the circumference of the tyre, resulting in slightly increased top speed at expense of slight loss in acceleration etc.
    If you need to change tyres, you would be better off staying with same size but increase the load rating, so that you are not continuously using the vehicle at or just over the tyre rating as is the case now.
     
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