[tsk1979]

Originally Posted by Shan2nu

Ok, lets put it on the Gtech Pro, it'll all come out, right there. I'm sure the grip has improved (it has to), so you mean to say, if your car had space for 205, you'd opt for that?

I'm not saying 195's are hopeless, they'll do wonders provided your car has the kinda power to handle them. Lateral grip has very little to do with engine power, it's in between the corners where this discussion matters.

Shan2nu

shan2nu, i like to take corners real fast and the v2 has a rigid chasis and i enjoy pushing to the limits. There have been times when i have seen the speedo needle go beyond 160Km mark. Mine is a DLS which is very very well maintained . 140kmph is easily attainable! Heres the proof

This was during the bangalore nagpur trip, and the one below is during the madurai trip. I dont have the pic of needle going beyod the 160kmph mark, but i sure felt scared at that moment as i wasnt even sure wether those tires can take that kind of speed(165/65ZVTS).

[tsk1979]

Originally Posted by Shan2nu

Dude, hold on. He's talking about the 195/55s on his car, not 185/65. In the 185 range, the 185/60 is the closest to the OE tyre size.

The diff between the 165/65 and 185/65 is 4.77% (which is not at all negligible). Compared to the 185/60s 1.38%. And it's common knowledge that it's always safest to upsize to tyres that are within 3% of the OE size. Closer the better.

Shan2nu

Hmm
185/65 = 120.25mm
185/60 = 111mm
175/70 = 122mm
165/65 = 107.25mm
195/55 = 107.25mm

I see that 185/65 will cause speedo erros.. So yes 185/60 makes sense!

[speedsatya]

tsk1079,
that is cool.
is there a difference in max speeds of the V2 and the old indica.
because i too have an office indica the pre -V2 type.and the max that i can do in it without AC is about 130 on the speedo.but i think the indica has a bigggg speedo error as i have seen the haryana roadways leyland buses buses keep up with me in the indica at 120 speedo reading.
these buses have a max of about 100 kph.so that means 120kph on the indica speedo is less than 100 kph true speeds.

and with those pathetic brakes ,its too risky to do more than 120 in an indica.

Originally Posted by tsk1979

165/65 = 107.25mm
195/55 = 107.25mm

the OD for 165/65 is 544.7mm which is the same for 195/55r13.when u have something same ,why do u want to go for soemthing different.
any other tire size means differnt speedo readings also.


cheers,
satya

[tsk1979]

Originally Posted by speedsatya

tsk1079,
that is cool.
is there a difference in max speeds of the V2 and the old indica.
because i too have an office indica the pre -V2 type.and the max that i can do in it without AC is about 130 on the speedo.but i think the indica has a bigggg speedo error as i have seen the haryana roadways leyland buses buses keep up with me in the indica at 120 speedo reading.
these buses have a max of about 100 kph.so that means 120kph on the indica speedo is less than 100 kph true speeds.

and with those pathetic brakes ,its too risky to do more than 120 in an indica.




the OD for 165/65 is 544.7mm which is the same for 195/55r13.when u have something same ,why do u want to go for soemthing different.
any other tire size means differnt speedo readings also.


cheers,
satya

Umm thats right therefore 185R60 is the best i think, same as the 195R55. 195 i feel is a bit too wide. 185 suits me

[Shan2nu]

the OD for 165/65 is 544.7mm which is the same for 195/55r13.when u have something same ,why do u want to go for soemthing different.
any other tire size means differnt speedo readings also.

Yup, i know everybody is thinking the same thing but, from the very begining, you guys have been forgeting that the Indica comes with 5J wheels, which is not suited for 195mm tyres. The max (safe) size these rims can take is 185mm, check it if you want.

195mm on a 5 J rim is asking for trouble.

Shan2nu

[Shan2nu]

Umm thats right therefore 185R60 is the best i think, same as the 195R55. 195 i feel is a bit too wide. 185 suits me

That was a very smart choice you made there. I know 195s are very tempting n all but, there's a limit to how much a car can take. I'd love to have 205s on my Vtec but, i'm going in for 195s since it's not powerful enuf to handle 205s.

Shan2nu

[shuvc]

Hi All,

I'm new to Team BHP and have been lapping up all the interesting details regarding tyre upsizes.
While on the topic of the old Indica .. I drive a 4 yr old Indica 2000 petrol .. which has stock 155/70 R13's.

Would it be safe to upgade them to the 185/60 on R13 alloys ? If so what specs should the alloys be .. I mean rim width ?
Also, how much would each 185/60 cost approximately ?

btw, I've touched 138kmph before I ran out of real estate and it did feel a lot faster than the 110 I was used to doing on my Shogun (oh how I miss it !). So even if there is a speedo error it should not be too much.

Shuvo

[shuvc]

@tsk , did you finally upsize on your Indica ?

As I mentioned in my earlier post on this thread, I run stock 155/70 R13s on my Indica 2000 petrol

Inputs:
1. I don't have power steering . Car is in pretty good condition and fun to drive.
2. 99% stop start twisty city driving with max 2 passengers.
3. Max speeds generally upto 80kmph .. at times touch 100kmph.
4. Like to accelerate moderately hard, and throw it at turns.
5. I give more weightage to handling than ride quality.
6. Plan to keep the car even if a new one is bought in the next couple of years.

Am planning to go for 165/65 R13 Alloys and Tubeless.
Alloys
Aura - I have more or less narrowed down on the model too.
Tyres (need help here )
Michelin Certis,
Goodyear GT3 (do they have 165/65?),
Bridgestone

Would appreciate suggestions/comments/feedback from the forum, on my upsize plans.

[Buffetfan]

I have used Michelin Tubeless 155/80 R 13 for the past 2 years in my uno...I find them excellant compard to the 145/80 R 13 Bridgestones that my original car came with...!! they have a better ride and lower road noise...the grip is very good compared to the bridgestones...on the other hand the bridgestones....BTW, are excellant if you are looking for long life......(I threw the 'stones away after they refused to wear even at 47K...were probably good enough for 15 k even then !!!)

[shuvc]

@buffetfan, thanks for your inputs .. some more queries if I may ..

How many kms have you run on your Michelins ?
How much did they cost you ?
Are they manufactured in Thailand ?
Do you use alloys with the Michelins ?
Did you use alloys with the 'stones ?
Do you have power steering on your UNO ? If not, how did the steering feel just after switching to the new footwear ?
What does one do with the steel wheels ?

I drive an average of 8K kms annually .. so longevity may not be an issue .. since I hope to get a new car within the next couple of years ..

[speedsatya]

u can safely put 165/6r13 or 175/60r13 in your indica

[tsk1979]

@shuvc, i have upsized to 185/60R13 from the stock 165/65R13. In your case i recommend the 165/65R13 from your 155s should be good enough
@speedsatya 165/60 will decrease the rotation diameter. The problem with indica is rim bending which gets worse with lower profile. In my case my diameter increases by 4mm, and due to extra width the hit to rims is reduced too in case i hit a pothole. So to have approx same diameter 165/65 traslates to 185/60 or 195/55. 195 is an overkill as 185 is enough if you intend to do 120-130 on highways.

[speedsatya]

oooops i wanted to write 165/65r13.thatwas a mistake.

165/65r13 and175/60r13 have similar OD

[shuvc]

Originally Posted by tsk1979

@shuvc, i have upsized to 185/60R13 from the stock 165/65R13. In your case i recommend the 165/65R13 from your 155s should be good enough
@speedsatya 165/60 will decrease the rotation diameter. The problem with indica is rim bending which gets worse with lower profile. In my case my diameter increases by 4mm, and due to extra width the hit to rims is reduced too in case i hit a pothole.

Thanks @tsk. Which brand did you buy ? Tyres i.e.

In my case, a slightly lower profile would be ok since,
a. I'm ok with losing a bit of ride comfort
b. will anyway be moving to alloys .. so rim bending will be done away with .. i(hope I don't break the alloys )

I am somewhat torn between the 165/65 and the 175/60 option .. my only concern for the 175 over the 165 is how much harder will the steering get ..

[aseem]

Just wanted to add something to this thread calculations apart. Most of us who upsize the tyres do it for two reasons, performance and looks.
The performance comes at the cost of comfort. Seeing the conditions of Indian roads, comfort is the key. Performance gain, well, yes you can throw your car in the corners, but if you do most city driving, you wont gain anything by upsizing the tyres. Only at highways can you find any use of the performance that has been gained.
This brings me to the most important point... We upsize tyres mainly for the looks. The 185's that I have upgraded to in my Swift dont make the car look bad, but are no way near the look gain you get when going in for 205's. The 195's dont look great either. So my suggestion is, if you really want to upsize, than go for 205's, of course after making sure that the aspect ratio isnt below 55. Below 55 on Indian roads is a real pain.
My next upsize would surely be a 205 and I dont care if I have to modify the suspension to do so. If we can spend 24k for tyres and alloys than we can spend another 10k to get the suspension modified.