2.6" tire on 27mm rim?

PB Forum :: 27.5/650b
2.6" tire on 27mm rim?
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Posted: May 30, 2019 at 20:34 Quote
I'm getting a Santa Cruz 5010 real soon now. I'd like the option of running a tire larger than the 2.3" that comes on the 27mm wheelset. I don't want to make the jump to the 27.5+ with 35mm rims because then 2.3" tires are no longer an option. I considered getting a separate 30mm wheelset, which seems to be a good size for the 2.3-2.6" range, but just don't want to spend the extra $$$. So I'm sticking with the 27mm rim and am trying to decide if I should run with 2.5" tires, the max recommended by Santa Cruz, or do you think I'd be ok with 2.6"? I think the main risk with oversizing the tires like this is them burping or rolling off the rim when cornering hard. I'm not a thrasher. I won't be cornering real aggressive, so probably this would not be a concern for my style of riding. What do you think?

Posted: May 30, 2019 at 21:10 Quote
Also, what do you think about using Maxxis WT tires on a 27mm rim? Supposedly they're optimized for 30-35mm rims. I'm not sure if this means you shouldn't use them on smaller rims. Maxxis offers very little in the way of 2.4" and bigger tires that are not WT.

Posted: May 31, 2019 at 13:30 Quote
DO IT!!! I made the switch from 2.4 up to 2.6 and I will never go back! the amount of extra grip is amazing and the bike feels better and more confidence inspiring as I lean it into corners! The amount of "suspension feel" from the extra tire meat is noticeable but not much. I run a 2.6 on a 29mm internal rim so you should be completely fine on a 27mm internal.
I ride hard and only notice tire squirm if the pressures are to low. SIDE NOTE* 2.6 allowed me to run lower pressures.
im 160lbs with gear
2.4 tires my pressure was 24-PSI FRONT and 26-PSI REAR
2.6 tires its 23-PSI REAR and 21-PSI FRONT
I recommend the 2.6 DHF or the 2.6 Butcher
(you will notice that with a 2.6 tire minor PSI changes feel bigger so check your PSI before ever ride)

Posted: May 31, 2019 at 13:39 Quote
I should mention my most current set up is 2.6 Front and 2.4 Rear just because it has less rolling resistance and I didn't notice the 2.6 having a benefit on the rear. On the rear the 2.4 and 2.6 feel the same in everyway except the 2.4 has less resistance.

Posted: Jun 1, 2019 at 13:56 Quote
rockchomper wrote:
I should mention my most current set up is 2.6 Front and 2.4 Rear just because it has less rolling resistance and I didn't notice the 2.6 having a benefit on the rear. On the rear the 2.4 and 2.6 feel the same in everyway except the 2.4 has less resistance.

That's good to know. I notice that the Bronson comes with 2.5 front and 2.4 rear. I was looking into putting maxxis minions 2.5 front and rear on my 5010 since 2.6 is just over what SC recommends, but interestingly Maxxis does not make the DHR2 in a 2.5 while it has plenty of 2.5 options for the DHF.

When you say 2.6 didn't have any benefit on the rear, were you mostly referring to traction? The main appeal of bigger tires for me is smoother ride you get at low pressure, so I might come to a different conclusion than you as to whether the 2.6 rear was of some benefit.

Posted: Jun 1, 2019 at 17:51 Quote
BTW, I spoke with one LBS a couple of days ago, and they said they've put 2.6 front and rear on these rims without issue. Then I spoke to another, who seemed pretty knowledgeable, and he recommended against it. Felt I would need to inflate them to the point that it would negate any of the smooth ride benefit you normally get from bigger tires (which is my primary reason for going with them). So I'll be going with 2.5 front and 2.4 rear for now and see how things go.

Posted: Jun 1, 2019 at 21:11 Quote
I would definitely say on a 27mm rim you won't have to over inflate with maxxis 2.6 or butcher 2.6 but I will say a WTB 2.6 would be too much for that size rim. As for 2.6 having no benefit on the rear it didn't add much traction and I also felt that as far as suspension feel it was almost unnoticeable . If you want a more plush suspension add a volume token and reduce air psi about 10psi per token !

Posted: Jun 18, 2019 at 23:24 Quote
Hello

Rim set #1 - mavic en827 inner width=27 mm https://shop.mavic.com/en-int/en-827-disc-j32400.html#1028=3283&1035=3806&1039=3514
Rim set #2 - stans no flow mk3 inner width=29 mm https://www.notubes.com/flow-mk3-rims
Cushcore on both wheelsets.


Already have tyres - Maxxis Minion DHF TB85925100 https://www.maxxis.com/catalog/tire-468-140-minion-dhf and DHRII TB85927000 https://www.maxxis.com/catalog/tire-470-140-minion-dhr-ii 2.30 3C MaxxTerra EXO

Considering of Schwalbe Magic Mary https://www.schwalbe.com/en/offroad-reader/magic-mary.html for second wheelset but there're some questions about sizes.
So,
1) 60-584 (27.5 x 2.35, 650B) 11600539.02
or
2) 65-584 (27.5 x 2.60, 650B) 11601010
??

And what combination of rims + tyres you'd prefer?

Posted: Jun 19, 2019 at 3:40 Quote
Schwalbe says:
bigquotesFor the best use we recommend to use an inner rim width of 25 to 30mm for 60mm wide Magic Mary and 30 to 35mm for the 65mm version.

https://www.schwalbe.com/en/reifenmasse.html

So, for any of my rims there's no point to buy 2.6 ?

Posted: Jun 19, 2019 at 12:56 Quote
The 29mm Stans MK3 Flow says it supports 2.35 to 2.8", although the 2.8" really sounds like a stretch to me given what other 30mm rims recommend (usually 2.3 to 2.6"). However, I think the Stans rim wall is a lower profile than other rims, so maybe this allows for a larger tire size (more tire sidewall available outside the rim, so the tire is not as "pinched" as it would be with other rims).

Posted: Jun 19, 2019 at 16:13 Quote
In my experience 2.35 MM soft is better then 2.6 speed grip.
Also going 2.6 over 2.3 you will add 1lb of rotational weight.

Posted: Jun 19, 2019 at 18:09 Quote
reverend27 wrote:
Also going 2.6 over 2.3 you will add 1lb of rotational weight.
I think that's a bit of an over statement. Although I'm sure you could find cases where it's true, if you look for example at a Maxxis DHF and DHR2 setup (3C/EXO/TR Maxx Terra), it comes out to 160 grams more weight moving from 2.3" to 2.6" (55g front + 105g rear). That a total of .352 lbs.

I should also added that you could switch to a Maxxis Rekon 2.6" on the rear. It's a very light tire, in fact 25g lighter than the 2.3" DHR2, so there's a only net 30g gain in that case. Santa Cruz does this when switching from 2.3" and 2.6" on the 5010, and is the 2.6" setup that Yeti uses on the SB5.

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