Falken Azenis FK510 vs Kumho Ecsta PS91 — Compared (September 2026)

“Upgrading tires from Falken Azenis FK510, looking for recommendations Hey all, I drive a V6 1LE camaro, i've been doing a lot of open practice sessions at a small track (the driveway in austin, tx), long story short I bought brand new Azenis FK510 two months ago, only about 4k street miles, and after about 3 hours of track time they're pretty much done....mostly from noob mistakes like overcooking the entry and destroying the front shoulders, and having the rear tires way too overinflated so the shoulders are fine but the center are down to the wear bars. Even under ideal conditions and purposely driving slower and smoother I can't see these lasting much more than 4-5 hours of track time, I'm just surprised to see these tires wear down very very quickly under hard driving and overheat somewhat quickly, these are awesome daily driving tires but I'm looking for more track performance. I'm currently debating between pilot sport 4s, bridgestone re-71r, firehawk indy 500. This is more of a philosophical question, I'm looking at a wide variety of treadwear tires, I'm curious how you guys decide on what treadwear tires to run and how you decide between wear, price, and grip. I'm leaning towards the RE-71r right now, I figure if I'm burning through my tires in a few months anyways might as well do it with sticky tires since my falkens didn't last long anyways... Read more”

“Anyone running Falken Azenis FK510? I bought a lightly used 2022 Model S from Tesla directly back in March of 2025. It came with the 21" Archnids on brand new FK510s. I immediately had the camber shims + an alignment to prevent the inner tear wear. Since then I've driven 11,500 miles on it. I noticed today my front tires look brand new, but the rear tires are completely bald all the way across. I drive in medium ride height and rarely accelerate aggressively. Now I'm wondering if this short lifespan is due to the tires Tesla put on there and if it would make more sense to buy a used set of 19" tempest wheels or replace these tires. Read more”

“Falken Azenis SUV (FK510) Replaced my Goodyear tires after 2 years. Was using Continental prior to that. Read some good reviews regarding the Falken FK510 SUV, some even mentioned it as the poor man's Michelin tires. Goodyear's tires were a bit rough, every time we drove through a bump or potholes felt really bumpy. Conti was soft, but it's lifespan is a bit short, usually lasts me a year or so. After driving around a day with FK510, it feels nice, somewhat like Conti. Here's hoping that it'll last me 2 years. Read more”

“I put the fk510 on my 2014 535d msport and the rears only lasted 10-11k or one year. Trying something different. They are a good performance summer tire but not worth replacing every year.”

“Follow up on new wheels/tires for ZHP Well new wheels and tires are on aswell as aligned. I love the tire and fitment setup but really do not like the gunmetal grey color especially on imola. I will feel it out for a while but probably eventually powder coat to OEM silver. Wheels specs are 18 x 8.5 x ET50 with 255/35/18 Kuhmo Ecsta PS91 all around. -2.5 camber in the front and -2.8 in the rear.”

“New meaty tires set up installed, now I can order spacers Went up tire sizes and they definitely fill the gap a bit. First time running sticky kumhos on anytime so excited to see how they turn out.Specs are Kumho Ecsta Ps91 235/40/18 up front and 265/40/18 in the rear. Read more”

“New wheels and tires for my ZHP My old wheels were super beat up and tires were showing wire so I figured I’d upgrade both. Was able to get these freshly powder coated squared set (18/8.5/et 50). Im excited to feel the Kuhmo Ecsta PS91 as they are a budget friendly performance tire. 255/35/18 tires all around”

“275/40 Square Can Fit on a Sedan Shout out to TireRack for having great information on actual tire size. Ecsta PS91 265/40 and ExtremeContact 275/40 has a tread width and section width difference of 0.1” and 0.2” respectively. Tires fit just about perfect. No rubbing so far, and don’t expect it to rub bc of the relatively minimal width change Really goes to show that tire brand matters for fitment Read more”