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Better Tyre Configuration for rear and front tyres

Discussion in 'Gen 3 Prius Fuel Economy' started by ikefor, Dec 9, 2017.

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  1. ikefor

    ikefor Member

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    Absolutely, the variables are uncontrolled here....however, driving conditions and terrain remained same between the periods when i made those changes, this was the reason why the results were being questioned in the first place. I routinely drive 40 miles along the same route to pick up my kids from school, at the same time mostly. Of course, i cannot control the number of vehicles, temperature and other variables because this is not meant to be a scientific model i was putting together to throw out there.

    I think the point regarding this thread has been made...i respect the scientific prowess and energy that members bring to PC threads like these, to be candid this is why we all come here.....this thread has not made any claims about what increases mpg's or not, besides what was observed from the the vehicle's computer at various times and my quest to do things and branch out to find meanings to them.
     
    #21 ikefor, Dec 15, 2017
  2. ikefor

    ikefor Member

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    You're right here, guess the title should have been a bit more refined or more question like......point noted!
     
    #22 ikefor, Dec 15, 2017
  3. Dxta

    Dxta Senior Member

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    Instead of mixing different tyre sizes and all that as you've done, why not replace those springs and shocks with something more higher than the stock shocks, to suit your purpose(ground clearance, to cusion in the effects of the bumps and all that)? Might be cheaper doing it that way.

    Well, glad you'd ha e to recwert to the stock tyres again.

    Getting higher shock absorbers, I mean modifications, would do the magic.

    PS: Remember, all modifications should apply to the front and rear ends, to balance up aerodynamic forces.

    If the rear is higher than the front, there'd be more drag and work done against the incoming air.

    You've got to modify the heights of the front and rear shocks to almost same levels.

    Dxta
     
    #23 Dxta, Dec 15, 2017
  4. Grit

    Grit Senior Member

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    Just have less psi in front tires and more in back. 33 psi front - 44 back.

    On my 98 Camry, have 15" front and 17" back. Mpg was 32 mpg at 55 mph, after 17s were put in the back mpg went up to 35mpg for 2 straight years of driving. Aero dynamic changed; acceration improved, longer glides and shorter braking distance, but less power and more fish tailing making fast left/right turns from 0 mph, lesser handling.
     
    #24 Grit, Dec 18, 2017
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