Thoughts on this tyre

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Discussion

Oortam

Original Poster:

102 posts

187 months

Monday 6th September 2021
quotequote all
I hit a pothole today with my front nearside tyre, slowing to enter a garden centre so not going fast. Was a bit of a thump so checked the wheel after I got home. The wheel is unmarked but there is a small bulge on the tyre wall and what looks like a hole in the side wall top layer. Will this need a new tyre? It's a runflat P zero on a BMW 440i.








CoreyDog

844 posts

105 months

Monday 6th September 2021
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I'd be changing that ASAP.

interstellar

4,301 posts

161 months

Monday 6th September 2021
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I wouldn’t be driving on that personally.

mmm-five

11,765 posts

299 months

Monday 6th September 2021
quotequote all
It's also deflated, so it must have been a big bump, or something went through the sidewall at the same time, or you caught the edge enough to push it off the rim...which is not easy with a runflat tyre on a runflat rim.

Have you driven on it at all?

Four Litre

2,174 posts

207 months

Monday 6th September 2021
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That's toast, even without the hole...

Sorry for your loss smile

Little Pete

1,752 posts

109 months

Monday 6th September 2021
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That needs replacing.

Haltamer

2,582 posts

95 months

Monday 6th September 2021
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Very sketchy; Definitely done for.

snoopy25

2,000 posts

135 months

Monday 6th September 2021
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Def change it

jhonn

1,632 posts

164 months

Monday 6th September 2021
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CoreyDog said:
I'd be changing that ASAP.
+1. Very fortunate that your rim seems to be unmarked! Bloody annoying though..

kambites

69,524 posts

236 months

Monday 6th September 2021
quotequote all
Yeah that's damaged the structure of the sidewall, it's going to fail at some point; it's probably not going to blow up on the way to the tyre fitters but I'd get it replaced ASAP and keep a very close eye on it until you do. Looking at how close the damage is to the rim, you were pretty lucky not to damage that too!

talksthetorque

10,820 posts

150 months

Monday 6th September 2021
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OP - have you checked the air pressure in the tyre?

g3org3y

21,578 posts

206 months

Monday 6th September 2021
quotequote all
As above, replace. Sidewall is compromised.

Any TPS warning out of interest?

anonymous-user

69 months

Monday 6th September 2021
quotequote all
I'm no crybaby and have driven the odd death trap but that's fooked hehe

eldar

23,963 posts

211 months

Monday 6th September 2021
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Worth checking the wheel isn't distorted. Bloody potholes.

TarquinMX5

2,249 posts

95 months

Monday 6th September 2021
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It might be worth checking the wheel whilst the tyre's off, numerous reports of some BMW alloys, particularly 19" ones, cracking when hitting potholes (and yes, tyre needs replacing, unfortunately).

donkmeister

10,352 posts

115 months

Monday 6th September 2021
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Surprised if you wouldn't hear it thrumming away if you tried to do any sort of motorway speed on it...

I had a similar oopsie driving up the ramp from the le shuttle platform in France; 5ish mph, same as everyone else, in a little MG with 40-section tyres (so not a 3-tonne beast on 20-profiles doing 50 through a pothole). Massive bang as I drove over what looked like a join between two sections of concrete and the tyre had gone a bit out of round. Spare wheel on, and when I had the tyre replaced they said it was possibly a steel cord snapping inside the tyre.

Oilchange

9,274 posts

275 months

Monday 6th September 2021
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stickleback123 said:
I'm no crybaby and have driven the odd death trap but that's fooked hehe
Quite. Looks like a great opportunity to switch to normal tyres.

Kawasicki

13,770 posts

250 months

Monday 6th September 2021
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The bulge is there because carcass cords have been cut/torn, and that area of the sidewall has lost structural strength.

Change it.

Pica-Pica

15,224 posts

99 months

Monday 6th September 2021
quotequote all
eldar said:
Worth checking the wheel isn't distorted. Bloody potholes.
Yes, check the inboard edge of the rim too/especially,

Oortam

Original Poster:

102 posts

187 months

Monday 6th September 2021
quotequote all
I thought it was toast but confirmation is welcome. The tyre isn't deflated and no warning on TPMS. I was travelling slowly so that's probably just as well. I'm surprised the wheel is unmarked, but I'll get it checked when the tyre is off. Now I have to look for replacements for the front. I'll probably take the opportunity to get rid of the runflats. Maybe Michelin PS4 or Goodyear Eagle F1.