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S60 & V60 '11-'18 / XC60 '09-'17 General Forum for the P3-platform 60-series models |
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Ride Comfort - Tyre size and pressureViews : 354 Replies : 5Users Viewing This Thread : |
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Mar 10th, 2024, 12:35 | #1 |
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Ride Comfort - Tyre size and pressure
After buying my 2012 (2013 model) S60, I was disappointed with hard ride when compared to my previous car, a Jaguar S-Type (the V6TD engine gave up on it !).
The S60 is fitted with 235x45x17 tyres and the pressure is 34psi., but the S-Type uses 235x50x17 's and the standard pressures for those is 31F and 32R. The S60's at 34psi. seemed high when compared to the heavier S-Type, so I dropped them down to 30psi all round, which improved the ride quality over small sharp bumps considerably. As I still have the S-Type and the wheels will fit the S60 (with modified bolts - flat faced instead of 60deg. taper), I have now put those onto the S60 and the ride comfort has been transformed. If you want a more comfortable ride, I can highly recommend Changing to 50's instead of 45's and dropping the pressures down to 30psi. |
Mar 10th, 2024, 13:53 | #2 | |
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Quote:
you might be better off swapping your wheels for 7 x 17 which accept 215/50/17 in the volvo accessory catalogue . your speedo will be a bit inaccurate with the Jag wheels on. volvo has software and/or different steering lock stops for different wheel and tyre combinations. Explained in the accessory book below. https://accessories.volvocars.com/en-us
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Mar 10th, 2024, 14:06 | #3 |
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30psi is way too soft. As mentioned the shoulders will wear very quickly.
I typically run my S60 diesel 37psi front 35psi rear and use the Eco setting for long distance high speed runs. The tyre pressure above is used on 235/40x18 summer tyres and 215/55x16 winter tyres. The 16" wheels give a much more comfortable ride being higher profile and softer winter compound rubber. The R-design I have gives a less forgiving ride but still soft compared with the two Focus cars I have/had which run on 235/35x19. I test drove a V90 which had clown car 21" wheels which felt at odds with the rest of the car.
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2011 Volvo S60 D3 R-design Premium - 2020 Focus ST estate automatic - 2020 KIA eSoul 150kW 64kwh EV Previous: 2005 Volvo S60 D5 Sport - 2017 Focus RS |
Mar 10th, 2024, 19:16 | #4 | |
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38psi is most fuel efficient, but its way too hard for my liking.
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Mar 11th, 2024, 10:55 | #5 |
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Thank you all for your comments, but I am quite happy to sacrifice a bit of loss of economy and uneven tyre wear, which in my experience won't happen anyway, for comfort. Please remember that 30psi. is only 1.0psi. less than these tyres were designed to be run at on a considerably heavier Jaguar S-Type.
I am well aware that if the pressure is too low it can cause the outer edges to wear more quickly and, by the same token,running them too high will cause the middle of the tread to wear out quicker. Also remember that the contact patch area will be affected at the same time. Low pressure INCREASES the contact patch area and high pressure REDUCES it, which also means MORE or LESS grip. "OFF ROAD" drivers and riders lower their tyre pressures to get MORE grip on loose and slippery surfaces. I therefore agree that a higher pressure will, in theory, give better MPG, but at the expense of grip. The best way to get better MPG is to adjust your driving style and be more gentle with your right foot !!! CLAN. Sorry, but your comments are frankly ridiculous ! 50% aspect ratio tyres would have to be much, much softer than 1.0psi. low to cause wheel rim damage and since when have 45% ones been anywhere near to "Racing" specification. Furthermore, I have no idea where you dreamed up £1500 to replace a wheel and tyre. Get real man !! |
Mar 11th, 2024, 12:39 | #6 | |
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I have been working professionally on volvos for 47 years and seen it all many times before I suggest you take my advice . rather than insult my intelligence.
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