Subaru Ascent Forum banner
1 - 18 of 18 Posts

·
Registered
Joined
·
88 Posts
Discussion Starter · #1 · (Edited)
So I’ve been looking at the Black Rhino Arches for my 2021 Ascent Touring

18x8
5x114.3
30(offset),
5.680 backset
2000 lb load rating
76.1 bore (I know I need an hub centric 56.1 insert


I plan on either Falken Wildpeaks AT or Toyo Open Country AT3 In 245/60/18 (to keep stock measurements). Any info on the better tire?

My question is how is the 30 offset going to compare to the 55 (stock) offset?

Also, on the hub centric insert, do I need a 0.05, 0.1 or no flange on the lip? I assume the aluminum Ones would last the life of the vehicle vs the plastic ones.


I also plan on doing Eibach Springs lift but down the road.

last thing....

Lug recommendations?

thanks for any feedback!
 

·
Administrator
Joined
·
10,943 Posts
Have you chosen a place to buy them? If not, talk to my friends at @Discount Tire and they can not just answer those questions, but also get you the correct hub centric rings and lug nuts. I've got two different sets of hub centric rings (metal and "plastic"), but didn't bother to check the flange before I slapped them in, since Matt and the team know their stuff. As for which to use, they're both great, but, the metal ones may seize into the rims or onto the hubs, especially in cold weather. Though they're more durable, I've not had a problem with the plastic ones breaking, and my car goes through an absurd amount of abuse.

The Falkens have been rated really well, but so have the Toyos. The Toyos are siped all the way through the knobbies, and I don't think the Falkens are. Falken support team is great, and really cares about their products.

As for the offset difference, your wheels will be sticking out an inch more. It will stick past the wheel well a little, which may affect gas mileage. Camber will be more pronounced as the sprung weight is loaded and unloaded around turns, which will wear your outer edges a tiny bit more. And of course, since the assembly is a lever, it's gaining a tiny bit more leverage which impacts bearing wear a tiny bit.
 

·
Registered
Joined
·
88 Posts
I haven’t chosen a place yet. Still researching what I’d like the set up to be. But I’ve been eyeing Discount Tire....

So, essentially, the closer I can get to the OE setup of a 55 offset, the better it will be? I.E. a 40 offset would be better than a 30?

Also, I’ve already purchased the CKE Bushings (75d) as well. Would this ultimately help lessen any of the latter issues you described (camber/bearings).

Lastly,
Seeing as the tire setup is as close to OEM specs one can get on a smaller 18” diameter tire, what would be the ideal wheel size then (to keep it as close to OEM specs as possible)?
 

·
Registered
Joined
·
54 Posts
We're preparing to do the exact same upgrade to the 18" Black Rhino Arches on our 2019 Limited, and I was wondering if there will be any clearance issues with this offset. Would we need to do any fender trimming?
 

·
Administrator
Joined
·
10,943 Posts
I haven’t chosen a place yet. Still researching what I’d like the set up to be. But I’ve been eyeing Discount Tire....
I can't recommend them enough. They are the reason us extreme off-roaders know which 17" wheels fit and can carry the Ascent. They helped me test fit or research dozens. I couldn't have done that without them.


So, essentially, the closer I can get to the OE setup of a 55 offset, the better it will be? I.E. a 40 offset would be better than a 30?
Correct.

Also, I’ve already purchased the CKE Bushings (75d) as well. Would this ultimately help lessen any of the latter issues you described (camber/bearings).
It will make things less mushy and feel more solid in how it reacts to turns, but, will only have a small minimal impact on combatting the added leverage.

Seeing as the tire setup is as close to OEM specs one can get on a smaller 18” diameter tire, what would be the ideal wheel size then (to keep it as close to OEM specs as possible)?
OEM size is:

18"
Tire size: 245/60R18 105H @ 35psi
--- Rated at 2039 pounds
Wheel size: 18 x 7½ J
Inset: 55 (2.17)
P.C.D.: 114.3 (4.5)
682 revolutions per mile


20"
Tire size: 245/50R20 102H @ 33psi or 32psi depending on trim
--- Rated at 1874 pounds
Wheel size: 20 x 7½ J
Inset: 55 (2.17)
P.C.D.: 114.3 (4.5)
 

·
Administrator
Joined
·
10,943 Posts
IMPORTANT NOTE:
If your tire does not have the same load rating as stock (which is fine not to, as long as it can carry the weight), then, ask your seller to calculate the proper tire pressure to carry 1,800 pounds.

In other words, if you are not getting a load range 105 tire, then inflate to the specs the seller tells you will support 1,800 pounds.

My Light Truck Tires, for instance, require a whopping 41 psi.
 

·
Registered
2020 Ascent Touring
Joined
·
36 Posts
@krustydude Arches are nice. I considered them but am going with Sandstorms. Keep in mind, due to the pandemic, production was halted and has recently started to pick back up. I tried to purchase a couple months ago, thus was not able to.

Here's a link to the Inventory page for the Arches, you'll be able to see when inventory is expected at their Fulfillment Centers. You can see, Gunmetal has 2 and Bronze has 3. Black has 0 with no planned inventory yet. Keep an eye on the page updates.

Once you see quantity and date for the wheel color you want, you can hit up Discount Tire via PM and ask to place an order and secure one of the first sets available. @Discount Tire has been nothing but helpful in my process to secure a set of wheels and tires and answered all of my questions.

Good luck!
 

·
Registered
Joined
·
54 Posts
@krustydude Arches are nice. I considered them but am going with Sandstorms. Keep in mind, due to the pandemic, production was halted and has recently started to pick back up. I tried to purchase a couple months ago, thus was not able to.
I've run into the same problem. I was hoping to get the Arches in black, but as you pointed out, they're still not available.
 

·
Registered
Joined
·
88 Posts
...Here's a link to the Inventory page for the Arches, you'll be able to see when inventory is expected at their Fulfillment Centers. You can see, Gunmetal has 2 and Bronze has 3. Black has 0 with no planned inventory yet. Keep an eye on the page updates.....
Thanks for the link and info. Very helpful. I guess being forced to wait will give me more time to make sure those are the ones I want. I like the Sandstorms too but not quite as much. But they are growing on me. I don’t mind waiting to get the ones I really like.
 

·
Registered
Joined
·
88 Posts
Discussion Starter · #12 ·
Looks great!

spacers? (Sorry, bit of a noob).

Do you have a lift as well?

Any reduction in MPG?
 

·
Registered
Joined
·
10 Posts
Spacers fix the difference in offset. So the wheels sit in the same place. Unsure on mileage. Wheel/tire combos are about the same weight and the diameter is nearly identical. I reckon the Falcon AT slows me down a bit, but not totally sure.

i do not have a lift. The tires I chose are identical size as the stock 20” tires, so rubbing, mph, etc aren’t an issue.
 

·
Administrator
Joined
·
10,943 Posts
Spacers fix the difference in offset. So the wheels sit in the same place
I would be very interested in knowing what spacers you put it. Spacers will not fix the difference in offset. They'll make it horribly worse. The Arches are 30mm offset, stock is 55mm. That means the Arches are 25mm farther outward, not inward. Adding spacers pushes it out even farther.

A common misconception (seriously, it's everywhere) is that adding to a positive offset moves the wheel inwards. It doesn't. It moves the centerline of the wheel inwards. Basically, that "centerline" is your mounting surface. When that moves inwards, the wheel edge moves outwards. So, adding a spacer, moves it even farther.

5887



Perhaps you are discussing hub centric rings? 76.1mm to 56mm adapters?
If so, you're all good. If not, then you probably want to remove the spacers, since they make things worse.

Final Notes:
  • 245/60R18 is an exact stock match for Subaru's 18" OEM size. So, great choice there! It's 1rpm off from the 20".
  • Remember that those tires require inflating to the 18" OEM specs, as they are the same size and load rating (105). That means 35psi (+1 or +2 max)
 

·
Registered
Joined
·
10 Posts
Thanks Robert! Apologies for the misinformation. There are grey plastic rings on the inside of the wheels. I thought those were spacers due to the mismatch in offset.
 

·
Administrator
Joined
·
10,943 Posts
Interesting... not sure about those. IIRC, the Arches are 56.1mm hub bores? So, regardless, you're all good on (lack of) hub centric rings.

@Discount Tire can you tell us what those are for?
 

·
Supporting Vendor
Tire & Wheel Specialists
Joined
·
279 Posts
@Rg123 @Robert.Mauro

Those looks like hub-rings, what's odd is that most rings have a lip that keeps them level with the mounting surface for installation purposes. Or if the hub-ring doesn't have a lip, the wheel will. As you stated Robert, the 76.1mm to 56mm would be the right ones, based on the photos they look to be about 20mm so that looks right. One thing though, we would recommend installing them into the wheels with the beveled edge facing out as this will help the wheel go onto the hub easier, or locate a set of hub-rings with the lip. We can help with this if needed, feel free to shoot us a PM.

Here's a bit more information on them Hubrings | Discount Tire
 
1 - 18 of 18 Posts
Top