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I have the rim DT Swiss G 540, which inner width is 24mm.

I already bought the CONTINENTAL GRAND PRIX 5000 tires 28mm (saw this advice on reddit).

But now I checked the official table and see that they do not fit together very well... :(

Rim: enter image description here Acceptable tires: enter image description here

The tire width is only 2mm less! What do you think - can I use it or better not?

On my last trip the tire came off the rim - but not sure if the tire size is the reason or I just overinflated it by CO2 cartridge: enter image description here

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2 Answers 2

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Its clearly not-recommended by the rim manufacturer.

On top of that, the tyre has come off for you proves that its a bad combination.

That it is only 2mm is immaterial - it came off and could have severe consequences.

There is no glue or strap or ziptie or bodge-fix that will allow you to use this tyre and rim combination safely.

Your options are to buy a wider tyre, or replace the rim with something narrower. A 32 or 34mm tyre would be cheaper than a new rim, presuming the rest of your frame provides clearance for a wider tyre.

If your front rim is the same inner width, the same advice applies. If your front rim is narrower, then it might work with this tyre.

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  • Thank you for the great answer! Before I wasn't sure, but now it is clear!
    – Oleg
    Commented Mar 1, 2023 at 9:21
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I raced crits for 2 seasons now with my farsport gravel rims 24 internal rim width and hookless... with 28mm GP 5000 S TR. So maybe 5 cat 1/2/3 crit races and about 15 cat 3/4 crit races with this set up (and all my training rides). during all that I and never had an issue, super solid cornering grip with this setup.

Results may vary. Not liable if you wreck and hurt yourself or anyone else.

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  • Advertised tire width is not the same as the actual width, which is what the table in the question is referring to. For example, I run a 25 width tire and they measure out to 28. Have you actually measured your actual tire width as mounted?
    – Ted Hohl
    Commented Dec 23, 2023 at 1:36

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