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Old 21st April 2009, 03:40   #1
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Alto Lxi...2004...Buzzing sound over 60KMPH

It was one day during light summers on the Jaipur Ajmer highway...I rode my Alto Lxi 2004 at an average speed of 140KMPH for about 60 mins...maxed at 145KMPH (Got a great picture that I'll post sometime later!!) but ever since that day there is a heavy humming sound whenever I drive over 60KMPH. I got the bearings replaced but the sound doesn't go away. The tyres are in good condition with decently deep threads (Normal company fitted JK Tyre 145/80 R12). The car has done about 50,000 Kms.

My mechanic suggested that I get the tryes change since that is a problem with JK Tyres as they harden due to heat and then get ruined and should be replaced after every 50K Kms.

Could the problem be that or is he duping me into buying new tyres? Is it standard to replace tyres even if in good condition after every 50K Kms?
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Old 21st April 2009, 09:44   #2
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has the sound started only after the 145 kmph run?

on the other side i feel that 50k is enough for the JK stock tyres. i was facing the same humming noise on smooth roads. changed the tyres to michelin and replaces one rear and one front bearing and the ride was smooth like nothing.
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Old 21st April 2009, 09:51   #3
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I have done a lot of runs at 140kmph in my Alto and it is currently in 55k kms.

Also had the original factory fitter JK tires, which I changed at 42k kms (they still had some 5k kms left). So 50k is a lot, good on your driving!

Never faced any sounds due to those high speed runs in from my JK.

Heavy humming - did you check you tire pressure (sorry, a basic question!)
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Old 21st April 2009, 14:55   #4
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Yup. I always maintain the pressure and it has been over a month i have been living with the problem.

And yes the sound started when I was returning from a long drive.

I'll get the tyres changed and let you know what happens!

Last edited by Rehaan : 21st April 2009 at 20:11. Reason: Posts merged.
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Old 21st April 2009, 18:03   #5
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Quote:
Originally Posted by alexnazim View Post
I'll get the tyres changed and let you know what happens!
Question: What do you guys suggest MRF ZVTS or Bridgestone S248?

Also, has anyone ever tried those chinese tyres, how are they? the ones for around 1400 per tyre!!
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Old 21st April 2009, 19:37   #6
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Alex,

Don't go for the Chinese make. The cheap price and the sub-standard quality is not worth the risk. Especially since you drive at high speed.

And yes, do run with new tires and let us know.
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Old 21st April 2009, 19:49   #7
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Quote:
Originally Posted by alexnazim View Post
Also, has anyone ever tried those chinese tyres, how are they? the ones for around 1400 per tyre!!
Whatever you do, please do not go for the Chinese tires. Seeing the speeds that you do, it will be SUICIDAL.
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Old 21st April 2009, 19:53   #8
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Thanks for the advice. So which ones shud I go for? MRF ZVTS or Bridgestone S248 ?

Last edited by Rehaan : 21st April 2009 at 20:12. Reason: Please avoid SMS language on Team-BHP. "Shud" = "Should". Please type in full words. Thanks.
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Old 21st April 2009, 20:16   #9
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I would suggest you go in for a tubeless tyre. And bridgestones are recommended over MRF by the tire gurus on the forum.
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Old 21st April 2009, 20:34   #10
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If you have replaced the bearings then its the tyres. I had the same problem. I thought it was bearings but then after checking came to know tyres were uneven and thats causing the humming noise.
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Old 21st April 2009, 21:38   #11
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Quote:
Originally Posted by alexnazim View Post
I got the bearings replaced but the sound doesn't go away. The tyres are in good condition with decently deep threads (Normal company fitted JK Tyre 145/80 R12). The car has done about 50,000 Kms.

the tyres are often teh bigger culprit but people target bearings.

Anyway,having covered 50k kms,I believe your tyres need a change.Michelin OR Bridgestone - take your pick.A big NO to Chinese tyres especially with you touching 100 miles an hour
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Old 21st April 2009, 23:49   #12
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Quote:
Originally Posted by vigsom View Post
the tyres are often teh bigger culprit but people target bearings.

Anyway,having covered 50k kms,I believe your tyres need a change.Michelin OR Bridgestone - take your pick.A big NO to Chinese tyres especially with you touching 100 miles an hour
I checked out the Micellin website, they did not seem to have anything for an Alto. So, have finalised on Bridgestone.

Thanks Guys. Appreciate the help!
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Old 22nd April 2009, 12:14   #13
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boss there are 1000s of altos running on michelin.
did u see the michelin india site. i am running my alto on 155/70/ r 12
also standard 145/80 R12 is available in michelins.

michelins are smooth and the wet road grip is amazing.
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Old 22nd April 2009, 12:53   #14
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Quote:
Originally Posted by amit_mechengg View Post
boss there are 1000s of altos running on michelin.

michelins are smooth and the wet road grip is amazing.
+1, im running 155/65R13 Michelin XM1 tires .
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Old 22nd April 2009, 13:08   #15
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Quote:
Originally Posted by badboyscad View Post
+1, im running 155/65R13 Michelin XM1 tires .
how much did these tyres cost?
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