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Old 1st July 2006, 23:26   #31
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Originally Posted by ram
So, the calculations show that, my tires restore the original height of the Maruti 800, to what it used to be with cross-ply tires.
However they are a good 27% wider!
he he .. Great then what say remove all the 4 radials i have in the car and keep the cross ply thin tyre as stepney as against the radial tyre from the current lot which i was planning to keep as stepney?what say ram?i will go and get the tyres in sometime whenever i get time.Pretty held up with the addmission tension which is giving me sleepless nights and frustrating days
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Old 25th April 2007, 10:38   #32
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Default tyres for m800 5 speed

Hi Ram,
I have been reading your posts regarding the tyres. Are they still working fine, how many km have you done now? Even I have a M800 5Speed and want to go in for those tyres like yours - if you recommend

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gopz
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Old 25th April 2007, 12:26   #33
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In the evening, I changed all five tires to MRF ZVTS 145/80R12. The rolling diameter and ride height has now slightly increased [1.45 cm] and the ride is discernibly softer (lower noise, vibration & harshness).

I realize that the 145/80R12 are meant for the Zen VXi and Alto.


Does anybody think that the tire-upsize is technically wrong?
The size may be technically wrong but I have been purposefully using these tyres over the last 8 years or so on my Maruti 800 with excellent results. You get much better ride comfort, thanks to increased cushioning that results from greater travel of the shock absorber that any radial tyre is. The flip side is that the odo and speedo show about 5% lower-than-actual readings but that doesn't matter to me. The other small drawback is that the stepney space is designed for the smaller tyre and hence when your stepney is 145/80, you need to apply considerable force to take it out. I usually put a little soap water to make the tyre surface slippery when I have to remove the stepney.

Incidentally, there is also a size 155/70/12 which is about the same dia as 145/80/12. This size should be good all rounder since it would provide better grip than 145/80/12 and about the same level of cushioning.
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Old 26th April 2007, 12:14   #34
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Hi Ram,
If i use a 13'' alloy on my maruti 800 (96 model) then which tyres should i go for .Right now i am getting around 19kmpl (highway+city). Would having alloy wheels after the FE of the vehicle and if yes by how much it may go down.
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Old 26th April 2007, 19:32   #35
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Originally Posted by Ravi Yadav View Post
Hi Ram,
If i use a 13'' alloy on my maruti 800 (96 model) then which tyres should i go for .Right now i am getting around 19kmpl (highway+city). Would having alloy wheels after the FE of the vehicle and if yes by how much it may go down.
You can go in for 145/70 R13 or 155/70 R13. Alloys would not make a noticeable difference to the FE of your car.
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Old 26th April 2007, 22:54   #36
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Originally Posted by iraghava View Post
You can go in for 145/70 R13 or 155/70 R13. Alloys would not make a noticeable difference to the FE of your car.
Ishan i think 155/70-13 will foul against the wheel wells.....
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Old 27th April 2007, 00:56   #37
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Ishan i think 155/70-13 will foul against the wheel wells.....
Does it? Didn't know that, never upsized an 800

What's the best size then?
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Old 27th April 2007, 00:59   #38
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You have to stop and ask yourself, what is this world coming to, when your own tyre dealer is asking for advice.
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Old 2nd May 2007, 10:46   #39
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If i go for a 145/80 R13 tyres, how will this affect my drive .Would i get a much better drive + better grip on the road . Would the tyres foul againt the wheel wells.Some help would be appreciated.
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Old 2nd May 2007, 18:14   #40
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Originally Posted by Ravi Yadav View Post
If i go for a 145/80 R13 tyres, how will this affect my drive .Would i get a much better drive + better grip on the road . Would the tyres foul againt the wheel wells.Some help would be appreciated.
145/80/13 is the FIAT Uno's tyre and Maruti 800's wheel wells may not accommodate them. Also, the car will become quite high and cornering stability may be adversely affected. Grip will not improve since the tyre width is the same as standard tyres. As suggested by me in my earlier post, go in for 145/80/12 or better still, 155/70/12 (better grip). Incidentally, 155/80/12 also exists and I've seen a 800 sporting them!

Last edited by directinjection : 2nd May 2007 at 18:16.
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Old 2nd May 2007, 18:53   #41
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Hey have the mrf zvts 145/80 r12 in my 800 since 9000 km now.Have changed everythin in the steering + the suspension system after installin the tyres to eliminate the cause of the steering vibration i used to get above 80.
the tyres were brand new then.Also had changed both the front rims.The problem was partially eliminated as now the steering vibration is still present but is very less and on certain road surfaces there is no vibration at all at any given speeds.I dont know what to blame but with the j.k tyres 145/70/r12s i had in my 800 the steering used to never vibrate at any speeds on any road surfaces ever.
About the ride quality..well it has become very soft and the small undulations in the road are soaked up pretty much and the big ones are damped to a certain extent also with the increase in the ride height the car does not scrape against the speedbreakers anymore with any amount of load.
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Old 4th May 2007, 11:45   #42
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Hey , directinjection and humyum thanks for the feedback.
After doing a lot of research i think the best tyre size would be 165/60 R13 .However due to a change in the rolling radius (4.5%) i would have a wrong speedo and odometer readings. Is it possible to rectified this problem using a new set of ado/speedo meters.
Or is there some other way to rectify this problem.
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Old 4th May 2007, 12:43   #43
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Quote:
Originally Posted by Ravi Yadav View Post
After doing a lot of research i think the best tyre size would be 165/60 R13 .However due to a change in the rolling radius (4.5%) i would have a wrong speedo and odometer readings. Is it possible to rectified this problem using a new set of ado/speedo meters.
Or is there some other way to rectify this problem.
I would advise you against 165/60/13. This size wouldn't give you good ride quality because of lack of cushioning. Also, if the rims are of steel, they would be prone to bending while going through potholes. I would advise you to stick to 12 inch rim. I think 155/70/12 would be the best size. I think 165/65/12 is also available if you want even more grip.

The old Maruti Zen (pre-2000) used to come with 145/70/13 size and the car's rims were prone to bending. To overcome the problem, Maruti reduced the rim size to 12 inch and to keep the diameter same, the aspect ratio of the tyre was increased to 80, the new tyre size being 145/80/12. As a result of improved cushioning offered by higher profile tyre, the problem of rim bending vanished. To deal with uneven Indian roads, higher profile tyres are better, though they aren't recommended if you're into high speed cornering.

The speedo error is a minor problem. You can always add about 5% to the odometer reading while calculating average. Usually, speedos and odos give higher than actual figures, so probably the new readings are actually more accurate.

I've done nothing to adjust my speedo and odo. Have been using 145/80/12 on my 800 for about 7-8 years now.

Cheers!
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Old 4th May 2007, 17:30   #44
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Dear All,

I've maruti 800 1992 model and will like to get Alloy wheels and radial fitted into it. Pls let me know the make and the cost of the alloys and the tyres.
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Old 4th May 2007, 18:14   #45
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Originally Posted by v1p3r View Post
You have to stop and ask yourself, what is this world coming to, when your own tyre dealer is asking for advice.
Well I can point the blame to day long stress and some alcohol for this
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