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Old 12th November 2007, 10:52   #1
SYJ
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Default Ohc upsize

Helo friends
kindly advice a appropriate upsize 4 my ohc. My stock size is 175/70-13. Nd please gimme the drawbacks of upsizin 2 205/50-15
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Old 12th November 2007, 13:56   #2
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195/60 R14 has been found to be the best upsize for the OHC.

The drawbacks of fitting 205/50 R15 would be that the profile is too low for our road conditions, increased rolling resistance and the 205mm width might cause probs (tyre scrubbing against the body) when you use complete steering lock.

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Old 12th November 2007, 13:59   #3
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Quote:
Originally Posted by Shan2nu View Post
195/60 R14 has been found to be the best upsize for the OHC.
I second that - the 195/60 R14 feels great even on the less capable 1.3. No experience with the larger ones tho.
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Old 12th November 2007, 14:16   #4
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195/60-14 is the ideal upsize for OHC.
205/50-15 would be simply suicidal on Kerala's potholed roads..
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Old 12th November 2007, 15:39   #5
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After upsizing, what about the speedo, odo errors ?
my current tyre size is 185/70/R13
What will be the sppedo, odo error if i upgrade to 195/60/R14 ??
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Old 12th November 2007, 15:50   #6
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Read the bible. Car Bibles : The Wheel and Tyre Bible Page 1 of 2
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Old 12th November 2007, 15:52   #7
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Quote:
Originally Posted by Shan2nu View Post
The drawbacks of fitting 205/50 R15 would be that the profile is too low for our road conditions, increased rolling resistance and the 205mm width might cause probs (tyre scrubbing against the body) when you use complete steering lock.
Too low is relative so I will not comment on that.

However, I use 205/50 R15 Yokos and can personally assure you that the width poses absolutely no problems in complete steering lock.

Regards,
Manveet.
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Old 12th November 2007, 16:41   #8
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Quote:
Originally Posted by manveet View Post
However, I use 205/50 R15 Yokos and can personally assure you that the width poses absolutely no problems in complete steering lock.
Does it scrape the fenders if you have 2 or more passengers in the rear seat?
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Old 12th November 2007, 17:08   #9
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so guys
does 205/50-15 cause a heavy dropdown in mileage......nd does my steering pedals gets tough....???
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Old 12th November 2007, 17:28   #10
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Quote:
However, I use 205/50 R15 Yokos and can personally assure you that the width poses absolutely no problems in complete steering lock.
You're lucky. My 195s themselves scrape slightly on full lock. You won't feel it while driving but if you check the inside of the wheel arch, you'l see the marks.

Quote:
Too low is relative so I will not comment on that.
A 195/60 tyre has a side wall that measures 117mm where as a 205/50's sidewall measures just 102.5mm. Thats a 14.5mm diff in sidewall height.

PS : It's not that 205/50 R15 can't be used, it's just that 195/60 R14 makes more practical sense.

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Old 12th November 2007, 17:31   #11
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FYI - ive been in vipers car which runs 205/50 r15 avs sports and the ride was pretty damn good. it went through potholes without giving me a backache. it probably just slightly worse than stock.
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Old 12th November 2007, 19:05   #12
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Quote:
Originally Posted by Shan2nu View Post
A 195/60 tyre has a side wall that measures 117mm where as a 205/50's sidewall measures just 102.5mm. Thats a 14.5mm diff in sidewall height.
Quote:
Originally Posted by akshay1234 View Post
FYI - ive been in vipers car which runs 205/50 r15 avs sports and the ride was pretty damn good. it went through potholes without giving me a backache. it probably just slightly worse than stock.
Yes, I understand - difference is about 0.6 inches. But trust me, the ride is acceptable on a 50 profile - maybe viper's comments will help here as he would have exposed his OHC to multiple driving scenarios.

Quote:
Originally Posted by Shan2nu
You're lucky. My 195s themselves scrape slightly on full lock. You won't feel it while driving but if you check the inside of the wheel arch, you'l see the marks.
195/60 R14 has an overall diameter (OD) of 589.53mm whereas the 205/50 R15 has a smaller OD of 585.97mm. It's just a thought - maybe your marks are because of this 3.56 mm difference.

Quote:
Originally Posted by Shan2nu
It's not that 205/50 R15 can't be used, it's just that 195/60 R14 makes more practical sense.
Perhaps. But then sticking to stock would be the most practical solution.

Quote:
Originally Posted by iraghava View Post
Does it scrape the fenders if you have 2 or more passengers in the rear seat?
Not sure as my car rarely seats more than 2 people. But from what I recollect, it hasn't scraped even once in the past year and a half of so of running this upsize. Anyhow, I'll check again and revert.

Last edited by manveet : 12th November 2007 at 19:08.
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Old 12th November 2007, 19:15   #13
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Quote:
But trust me, the ride is acceptable on a 50 profile -
I agree ,iv driven a fellow bhpians (Hellraiser) OHC which has 50 profile tyres many times and honestly i dont get the whole `lower profile tyres will give you a backache funda` ,i mean it can be a problem for those who suffer from backpain but it shoudnt be a problem for everyone.
Just my 2 cents.


Manveet - Welcome back.
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Old 12th November 2007, 19:27   #14
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Manveet - Welcome back.
Feels nice to be missed. I love you too.
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Old 12th November 2007, 19:39   #15
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Guys, SYJ is gonna put alloys on his ride this week, and would like your opinion on the selected alloy design. PLs post ur views and comments on the design, as we are apprehensive about the colour of the alloy matching that of the car.

The car:


The selected alloy:15" Lenso SHU


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