tcb14 Report post Posted May 17, 2020 So I got some new tires yesterday (Nexen N-PRIZ) and I can tell the ride is most definitely smoother, and the car feels more responsive. But I’ve also noticed that my efficiency leaves are constantly gone or almost gone. I feel like the ICE is also making a more pronounced noise. Before it was always nearly silent, which I grew accustomed to. Maybe where the tires have better grip it’s making the motors work a little harder? I was wondering if anyone else has came across this, or if it’s more than likely just in my head. The car seems to run just fine, still averaging around 40 MPG and everything. Thanks!! Quote Share this post Link to post Share on other sites
FineEngineer Report post Posted June 6, 2021 I noticed something similar with my '17 Energi. I replaced the stock Michelin Energy tires with Continentals, and it appears that the mileage has decreased notably. I drive 100 miles / day, so not too much time on straight battery power. But I was averaging about 50 mpg from when I got the car to tire replacement at 38K miles. Then with the Continentals, the mileage varies from 40 - 45 mpg (depending on season, as I only get 10 miles of battery range in the cold winters instead of the 18 or so in the warmer months). I'll have to run the numbers and see if the extra cost for the Michelins is justifiable for the improved mileage. Quote Share this post Link to post Share on other sites
Cobra348 Report post Posted June 7, 2021 The OEM tires will perform better when it comes to mileage than anything else. My brother did what you guys did - replaced the Michelins - on his '13 and immediately noticed a drop in MPG. I see a drastic drop when I switch to snow tires. Quote Share this post Link to post Share on other sites
ElectricFan69 Report post Posted August 22, 2021 On 6/6/2021 at 8:22 PM, Cobra348 said: The OEM tires will perform better when it comes to mileage than anything else. My brother did what you guys did - replaced the Michelins - on his '13 and immediately noticed a drop in MPG. I see a drastic drop when I switch to snow tires. The drop may be from the increased rolling resistance, or from the cold temps and 'winter gas' encountered when the snows are needed. Or a combination of both. Low rolling resistance tires are key to keeping the MPGs as high as possible. Quote Share this post Link to post Share on other sites
MeeLee Report post Posted August 23, 2021 (edited) Nexen tires are pure crap! They're extremely soft tires, containing more silicon than rubber; which makes them more resistive to heat, and pressure, and makes the ride much softer and quieter, but also makes them give terrible gas mileage, and they only last for a good 20-30k miles tops. You preferably run the tires at their max rated PSI when hot (in my case that's 45PSI cold out of 50PSI max). My "waterfall" tires get up to 48 on the highway, and 49 on long highway rides when it's over 100F. Best is to replace all tires with decent tires; or replace the front tires with decent tires, and run the Nexen until they need replacing on the rear wheels. You'll still see 40MPGs, because your avg MPG rating is probably still leveling out after replacing good tires with this junk! (sorry, but Nexen is pure junk, the ones I had weren't even steel braded). Edited August 23, 2021 by MeeLee Quote Share this post Link to post Share on other sites
Cobra348 Report post Posted August 23, 2021 I agree on all those points. I dread Winter because my mileage tanks. My brother has since traded the '13 for an '18 and he has kept the OEM tread mounted. Gets great mileage. Keep the tires inflated, tho! That has a large effect on efficiency. Quote Share this post Link to post Share on other sites
