Everyone knows - winter shoes should be not only warm, but also spacious, otherwise the legs will still freeze. But what about the car?
With the advent of the VAZ 2110 3 “dozens” completely officially “put on” 14-inch tires. We plan to start selecting winter shoes for the “one hundred and third” in the near future, but for now … why not try different “inches” for the serial “eights” and “ten” - since their owners can put the tires as standard without any problems, and larger. Maybe more here is better?
We decided to compare tires from one manufacturer, one model, with the same tread pattern, but with different dimensions - 175 / 70R13 and 175 / 65R14. The choice fell on one of the most "toothy" winter tires "NIISHP-Rally 2000".
For the purity and completeness of the experiment, two editorial vehicles were involved in it: VAZ 2111 and VAZ 2109 3. Changing the tires, their drivers exchanged all the accumulated information.
External differences. As expected, the twins are like two drops of water. The same, roughly cut tread blocks, similar inscriptions on the sidewalls, the minimum difference in outer diameters. Nevertheless, distinguishing them is quite simple - in the tread of a later model (14-inch) there are holes for spikes. In addition, she has slightly smaller checkers.
To begin with - weighing. Assembled with the standard steel disk of the “big” NIISHP-Rally, it’s 1.5 kg heavier than the “smaller” brother - a figure that already makes you think. But outwardly, even on ordinary steel wheels, both cars look much more spectacular with the 175 / 65R14 tires, and this is not discounted.
On road. While the cars went through the five-kilometer run-in, we tried to collect the maximum of related information. It turned out that the "relatives" in different ways affect the behavior of the car. The most noticeable change in longitudinal dynamics. Shoe “big” “NIISHP-Rally”, you seem to hang heavy shackles on the car. Elasticity is particularly affected. Without even focusing specifically on this parameter, you immediately feel a lack of torque when starting off, the need to “tighten” the motor to 4000–4500 rpm with quite ordinary acceleration, the laziness of reactions in higher gears. And this is on the pavement - on the snow the difference is even more noticeable.
We start from the spot: for some reason, the "large" drive wheels are skidding all the time, the car is clearly losing the start. They require more energetic accelerator work and, therefore, are more prone to slipping.
In the steady movement, the tire odds seemed to be aligned - but no! Even on an insignificant lift of the wheel “by 14” they immediately begin to “choke” the engine, forcing them to switch to lower gears.
Controllability. Estimating this parameter, we were convinced: the car clearly sympathizes with the "big" NIISHPu. On it, the reactions of the machine become more assembled and whole, it better tracks a given trajectory, or rather carries out the driver’s commands.
In the snow, and even on mixed surfaces, both shoes are not ideal. They are so eager to emphasize their sporting origin that they cling to the slightest bald spot, tubercle or simply a rougher surface, immediately transferring it all to the car, already prone to yawing on the snow cover. In general, shocks and jerks from side to side become an integral part of straightforward movement.
Then we suddenly find that on 14-inch tires the car moves much smoother. In the corner there is no so characteristic for 13-inch fast and sharp "failures" in the drift with subsequent no less sharp stabilization.
A car on “big” tires behaves softer, more often forgives mistakes, and controlling its behavior is easier and more convenient. In general, handling is definitely in favor of the "big brother."
Noisiness. Surprisingly, differences were revealed here: 13-inch tires seemed less noisy. Of course, and they do not differ in silence, they buzz on the road very thoroughly. But a larger brother here looks worse. The difference in the range of 60–80 km / h is especially noticeable.
Vibration load. Here both options are almost the same: the tires react quite tough to small irregularities, carefully transferring them to the car body. The 13-inch NIISHP-Rally, which looks slightly more comfortable against the background of the “bigger brother”, dampens the shocks somewhat better.
At the training ground. As can be seen from the table, almost all of our impressions are confirmed by numbers. In terms of overclocking dynamics, the “light” version outperforms its competitor. To give up almost two seconds during acceleration in first gear from standstill to 30 km / h, agree, a bit too much. Elasticity indicators are slightly less expressive, but they are not in favor of the 14-inch wheel.
With braking, the situation is better. Both tires showed approximately the same result, but the 13-inch performance is more stable - as, however, both on the coast and on fuel economy.
The result is very clear. If your car, as they say, is “imprisoned” for a 13-inch “shoe”, it is still preferable for it.
Non-standard tuning cars are another matter. The selection of rubber for them is, of course, a purely individual issue, but with a more powerful engine and, as a rule, changes in gear ratios in the transmission, it is possible that 14 inches will be preferable. In addition, better handling is not to be discounted.
Well, it’s better for owners of serial VAZs not to experiment: too big “shoes” are also bad.
NIISHP-Rally 2000 "13"
NIISHP-Rally 2000 "13"