Tyre size and Wobble over 65mph

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Jayce72
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Tyre size and Wobble over 65mph

Post by Jayce72 » Wed May 23, 2018 10:25 pm

Referring to a Locked post:https://igmaynard.co.uk/bongo/forum/vie ... 0&start=15

I have brought a Bongo about 5 months ago and I also get a wobble at speed. I have to concentrate really hard to keep it under control. The speedo also reads 4 mph faster than the Sat Nav.

The sticker on my Bongo says my Tyre size should be: 215/70 R15

I have alloys and the Tyre size on all 4 wheels is 205/70 R15

I have read about spigots and I dont know if I have any on my alloys or if my alloys are factory fitted or purchased afterwards

Bongo is a 1997 2.5 V6 Petrol

Any thoughts please on the wobble and speedo?
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knpenny
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Re: Tyre size and Wobble over 65mph

Post by knpenny » Wed May 23, 2018 10:32 pm

if it is an awd 4x4 then i would put the recommended tyre size on as you can damage your transfer box/diff , also is the wobble and actual movement wobble or is it excessive vibration?
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Jayce72
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Re: Tyre size and Wobble over 65mph

Post by Jayce72 » Wed May 23, 2018 10:43 pm

knpenny wrote: Wed May 23, 2018 10:32 pm if it is an awd 4x4 then i would put the recommended tyre size on as you can damage your transfer box/diff , also is the wobble and actual movement wobble or is it excessive vibration?
Not a 4x4 - also its more of the slightest movement in the steering at speed is exaggerated and to get it back straight can be difficult and you end up looking like your probably out of control if watched from behind
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Re: Tyre size and Wobble over 65mph

Post by knpenny » Wed May 23, 2018 10:54 pm

are you getting a knocking sound when turning corners? if you are its your steering ball joints however with your tyres not being the correct size there is a chance someone has changed the tyres and not balanced them properly.
check to see if you have weights on the rims of your wheels, if not they will need balanced.

Other common faults are wishbones and anti-roll bar bushes but not likely to cause a "wobble" and you would hear them most likely :wink:
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TheLongRoad
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Re: Tyre size and Wobble over 65mph

Post by TheLongRoad » Wed May 23, 2018 10:57 pm

Have the wheels balanced and tracking checked at a tyre centre. Probably cost £60 / £75. Should sort it.
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knpenny
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Re: Tyre size and Wobble over 65mph

Post by knpenny » Wed May 23, 2018 10:58 pm

agreed :wink:
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Jayce72
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Re: Tyre size and Wobble over 65mph

Post by Jayce72 » Wed May 23, 2018 11:08 pm

knpenny wrote: Wed May 23, 2018 10:54 pm are you getting a knocking sound when turning corners? if you are its your steering ball joints however with your tyres not being the correct size there is a chance someone has changed the tyres and not balanced them properly.
check to see if you have weights on the rims of your wheels, if not they will need balanced.

Other common faults are wishbones and anti-roll bar bushes but not likely to cause a "wobble" and you would hear them most likely :wink:
No Knocking - both front wheels have weights and the following was off my recent MOT:
-Offside Rear Anti-roll bar linkage has slight play in a pin/bush (2.4.G.2)
-Nearside Front Anti-roll bar linkage has slight play in a ball joint (2.4.G.2)
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Re: Tyre size and Wobble over 65mph

Post by TheLongRoad » Thu May 24, 2018 5:23 am

The wheels might have weights but are they still in the correct place? Have them rebalanced before you start looking for more costly problems.
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Re: Tyre size and Wobble over 65mph

Post by Bob » Thu May 24, 2018 8:44 am

Well worth checking tyre pressures. :wink:

Re the speedo, that's normal. They almost always over read but the sat nav will be accurate. Don't worry about it.

It is also possible the wheel nuts are incorrect. Sometimes alloys are fitted with the original nuts for the steel rims.
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Re: Tyre size and Wobble over 65mph

Post by Jayce72 » Fri Aug 24, 2018 7:31 pm

OK - Problem SOLVED

The rear tyres on my Bongo were 205/70 R15 - they should have been 215/70 R15 (according to the sticker on the inside of the door)

Changed the tyres and - WOBBLE GONE :D :D :D

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Re: Tyre size and Wobble over 65mph

Post by teenmal » Fri Aug 24, 2018 8:31 pm

knpenny wrote: Wed May 23, 2018 10:32 pm if it is an awd 4x4 then i would put the recommended tyre size on as you can damage your transfer box/diff , also is the wobble and actual movement wobble or is it excessive vibration?


Bongo is a 1997 2.5 V6 Petro
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Re: Tyre size and Wobble over 65mph

Post by mikeonb4c » Fri Aug 24, 2018 10:05 pm

Jayce72 wrote: Fri Aug 24, 2018 7:31 pm OK - Problem SOLVED

The rear tyres on my Bongo were 205/70 R15 - they should have been 215/70 R15 (according to the sticker on the inside of the door)

Changed the tyres and - WOBBLE GONE :D :D :D

Happy camper #-o
Excellent. Suspect the cure was probably linked to wheel balancing rather than change in tyre size though?
Jayce72
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Re: Tyre size and Wobble over 65mph

Post by Jayce72 » Sat Sep 01, 2018 3:27 pm

mikeonb4c wrote: Fri Aug 24, 2018 10:05 pm
Jayce72 wrote: Fri Aug 24, 2018 7:31 pm OK - Problem SOLVED

The rear tyres on my Bongo were 205/70 R15 - they should have been 215/70 R15 (according to the sticker on the inside of the door)

Changed the tyres and - WOBBLE GONE :D :D :D

Happy camper #-o
Excellent. Suspect the cure was probably linked to wheel balancing rather than change in tyre size though?
No, it was the tyre size - tried band new tyres put on the back several weeks ago and that didnt cure it - only the new size tyre did the trick - now I have two brand new spare tyres sitting in the shed that came off the back, that'll put on the front when needed
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