Difference between 195/65 R15 and 225/45 R17 tires?
Good morning:)
I drive a VW Golf VI Variant, 1.4 TSI, 122 hp automatic (but I shift gears myself thanks to Tiptronic).
I currently have 225/45 R17 all-season tires on (low rolling resistance tires from Goodyear).
I drive extremely fuel-efficiently (I keep the tires at 0.5 bar above normal tire pressure, always shift up as early as possible, only drive 90 km/h on the highway, etc.).
So I use a whopping 3.9 liters on the highway and 5 to 7 liters per 100 km in the city, depending on the driving situation!
My question now is whether it would be worth changing to 195/65 R15 or at least 205/55 R16 tires to further reduce fuel consumption…
I've already looked around in various forums but the results vary greatly (from no savings at all to 1.5 liters per 100 km…!).
What are your experiences (or calculations?) regarding what kind of difference I could expect in terms of fuel consumption? And how big would the driving behavior be with the narrower tires?
Thank you for your answers!
PS: I drive about 25,000 km a year. Therefore, the switch and the associated purchase costs of new rims and tires might actually be worth it…
(1 votes)
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I think (not knowing as I don’t know the golf so well and only go out from general basics) that it will bring minimal what. With your already economical driving mode max 0.5l /100km on average over the year.
If, then 195 on steel, then you will have the least moving mass (magnesium rims before), which will bring a slight advantage when approaching inside. The costs are well below those of the 17s, if there are no increased vans.
The 195s/205s will roll softer, run quieter and provide more comfort, so you stay under 3 bar.
Whatever you should do, if not already done: oil change with the lowest possible released (supersparsely run) oil (0W30) and probably, depending on the running performance, a gear oil change. There’s a lot more in there.
Says the one who moves a 3.0 diesel all-wheel combination with 4.3liter:)
I currently have 5W-30 oil inside, let’s see if 0W is going.
Otherwise thank you for your answer:)
Hello, consumption is always at the expense of retrofitting and, if necessary, the Tüv removal.
Because for the golf of my knowledge the 205s are the standard measure, this would come into question rather, but it means new rims. You have to take these costs once by the relative savings in fuel consumption. If so, then maximum if the tires have to be renewed anyway. As far as I know, the 205s against the 195s are much cheaper and the offer is VIEL larger.
I don’t know about the tires. I’d like to tell you something about tempomatism:
You don’t consume less by turning him on. If you keep the speed constant with the gas foot, the consumption is the same. You can even lower it if you don’t use it, that’s when you get uphill. The tempomat then gives gas to keep the speed. The consumption increases extremely depending on the mountain, which you have already seen at the consumption display. If you don’t give so much gas, but get a little slower, the consumption is lower. You can build speed again when you go downhill.
In modern trucks, the tempomat takes into account the topology. It is possible to adjust the speed to, for example, 70km/h. It saves fuel.
If I’m in the 7 gear via Tiptronic and lose the uphill speed, the tempomat does not accelerate by turning into a lower gear, but the car is slower, as if I’m on foot without tempomat Gas would drive… That’s what it is:)
This is true, however, that the tempomat does not hold the speed. That contradicts his function. But good in this case, he does that.
so I think it will be a little less but so much savings I don’t think in