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I'm going a different route on my next set of front tires - trying these IOTA EVT (Standard)'s instead!
- Thread starter troop
- Start date
troop
Well-known member
UTQG 320AA with a wet traction A rating. They're designed with a softer compound due to the instant TQ that an electric vehicle can put to the ground. If used on a car, they'd likely have a short(er) tread life, but on the front of a Spyder that won't be a concern. They still have a load rating of over 800#, so I'm running the standard car tire 18#.
That looks to be a an asymmetrical design, do these tires have "This Side Out " on the sidewalls?
How much weight to balance each tire?
troop
Well-known member
Yup. The tires do have "This side out" on their sidewalls. One wheel took .5oz, the other took 1.5oz. This is due to one of my PPA wheels being a bit heavier (per my local installer). One PPA wheel always takes a touch more balancing weights, whether the tires are Vredestein or Achilles or Kanines.
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CloverHillCrawler
Well-known member
What I used on the holes on my passenger backrest that I widened with a drill to accommodate rock straps is gloss black fingernail polish. It also works on wheel scratches on the black rims real good. I can't even tell it is there. Also, when the risers for my wife's floorboards rusted out, I repainted them with truck bed liner spray. For the exposed bolts, I gave them a light touch of liquid tape to cover them with a hobby paint brush; the paint will break free when I need to disassemble them.
As far as the tire goes, it will be interesting to see how well they react to being on the Spyder, as being an EV tire, it will have a harder compound due to the weight of EV batteries. Also, what will be interesting is, if you only put the EV tires on the front and not on the back, is to see the difference in the feel between the front and back while riding, and if the front doesn't start sliding around on you some. I was thinking of experimenting with a run flat tire if I can find one on the next change, but with that, I would also change the rear tire to a run flat so that all three tires are covered.
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troop
Well-known member
I did think of using black nail polish, but the oil based Sharpie was fast and easy.
KX5062
Well-known member
I believe these are standard tires. Per the website, the Iota EVT E silent is the EV rated tire. I would assume the "EVT" moniker is just marketing. The rating as posted by Troop of UTQG 320AA is actually a fairly soft tire with a decent rating. The 320AA rating is in the range that I believe is appropriate for the Spyder.
troop
Well-known member
Yup. As stated above, the UTQG rating of 320AA is indeed, on the softer compound side. If it were on the harder side, the instant torque that EV vehicles put to the ground would likely spin these tires every time on acceleration. That is likely why the tread wear warranty is only 35K for these tires. Also, they do have an A rating for wet traction. I'll be giving them a good try out tomorrow on a planned 150 mile ride. I'll report my impressions here.
Here is the Standard tire description:
OTA EVT (STANDARD)
Smarter, stronger, and more versatile - this next-gen upgrade to the iconic Accelera PHI delivers ultra-high performance and everyday reliability for gas-powered vehicles. Engineered for confident driving in all conditions, the IOTA EVT standard version brings traction, comfort, and control together in one powerful pattern.- UHP Grip for superior traction and control
- Lower rolling resistance for better fuel efficiency
- All-condition performance for year-round confidence
- Reinforced tread for durability and handling at high speeds
CloverHillCrawler
Well-known member
It sounds good on paper, but all of those traits come with a big EV battery sitting on top of them, pressing them against the ground.
It will be interesting to see what happens when you don't have that big EV battery sitting on top.
Just like the reason we run 20 psi and under on our aftermarket car tires, if we run over that, the tire is way over inflated due to the harder compound and lesser weight of the Spyder.
Interesting that they used a softer compound, from what I understood EV's tires were being made with a harder compound due to the softer compounds getting destroyed with less than 20k on them due to the weight of the batteries.
Sorry to be poo-pooing it, I am just trying to look at all of the factors involved with it. I hope I am wrong.
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troop
Well-known member
I understand the scepticism. We shall see. That said, don't know what more to say?
1.) The Iota EVT "Standard" is primarily spec'd for gas powered vehicles.
2.) The Accelera 165/55R15 has a max load rating of 853#. That's the exact same as past Achilles/Federal 165/55R15 auto tires. That's 55# less than either the Conti/Vredestein 165/60R15 (and your Vredestein 175/55), so not sure about the heavy weight comment.
3.) The 320AA compound is actually softer than the 400AA on both the Conti/Vredestein.
4.) I'll still be running 18#
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troop
Well-known member
Completed a 155 mile ride today on the new tires. Very happy with them!! They rode nice and smooth, with a very controlled ride. They performed excellent in cornering. This was on a cool day with temps in the low 50*s. My Achilles tires will be five years old next Spring. They will be replaced with these. +++
jzeiler
Active member
Just be aware that you must have a TPMS if you are running run flat tires. You need to know when you are actually running them while flat and you are limited to the number of miles that it is safe to do that. They are not mount 'em and forget 'em. But you will likely not find one in our size. On sports cars, run flats ride like cr*p.
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