How is it cutting corners? Do you not understand there is more choice, less weight, better turn in due to less sidewall etc etc. I'm running Pilot super sports I don't see how that is cutting corners? What tyres do you run?
Because you are not buying the correct tyre size which was designed for the car?
So the speedometer, mileage, traction control, torque and gearing settings are all based on the distance that the tyre travels over one complete revolution. A tyre with a different outside diameter will travel a different distance over that one revolution with a different amount of torque.
For an extra £30 a corner why not put the correct size tyres on? It doesn't matter if they are bloody F1 tyres....if they are the wrong size its a waste of time....
I agree that it might not make 'that' much difference dropping the profile down by 5 but it is cutting corners
What about buying wheels who pump out replicas? I personally don't have a problem with it but isn't it cutting corners? Surely you should stick to Oem wheels.
Can't say much else the posts above are spot on. It makes such little difference to alot of thr stuff but makes a big difference to weight. Pick up a wheel with 45'd compared to 40's. Heavier which is unsparing weight. Less sidewall distortion so a more positive turn in. The also look way way way better.
Now your just being silly....these 'replica' wheels are a perfect fit for the car. They match all the right tolerances/specs needed, exactly the same as OEM wheels.
Just admit you cut a corner to save £120?! Go on it isn't that hard to say! I will go first if it helps....'I couldn't justify spending £2k+ on Volks so I bought Rotas instead'.
apart from the fact there alot heavier than what the 'OEM' suspension and wheel bearings etc was designed to carry so your choice is more likely to wear out suspensions parts etc alot faster which i would say is more of a concern than a rolling radius change that wont effect anything other than speedo error, I know which one nissan would frown upon more from an oem manufacture point of view.