[suresh_gs]

Originally Posted by rajivtelang

What year model your Santro is? Did they fit perfectly on stock rims?
I too am looking for same tyres for my Santro, 2013 Model. What I understood from Tyre Empire shop in HSR that Santro's rims cannot take any size beyond 155/70 R13. Anything bigger needs the rims to be changed.

165/65 R13 is the perfect upgrade for santro xing on the existing stock rims. I own a santro xing on which the current tyre spec is 165/65 R13. I changed these tyres in Jan 2014.

[Geo_Ipe]

Originally Posted by rajivtelang

What year model your Santro is? Did they fit perfectly on stock rims?
I too am looking for same tyres for my Santro, 2013 Model. What I understood from Tyre Empire shop in HSR that Santro's rims cannot take any size beyond 155/70 R13. Anything bigger needs the rims to be changed.

Mine is 2005 model, these are the third set of tyres. 165/65's fit perfectly on the Santro OEM wheels. Maybe your dealer was trying to coax you into buying a new set of wheels as well, probably alloys!

Quoting another BHPian who fit 170/70's on the stock wheels and is happy with them.

Originally Posted by mayankk

Got the gt3 175/70 for the Santro finally.
They fit in the stock rim just fine.
Thanks guys.

[rajivtelang]

Originally Posted by Geo_Ipe

Quoting another BHPian who fit 170/70's on the stock wheels and is happy with them.

175/70 R13 will be an overkill I suppose. It will increase the GC too much and surely well beyond 3% of standard size. I will go for 165/65 R13 since it will surely be great. Does this affect the FE by any chance due to increased width? Santro gives some 13-14 in City and around 17-18 on highways with stock sized tyres.

[Geo_Ipe]

Originally Posted by rajivtelang

175/70 R13 will be an overkill I suppose. It will increase the GC too much and surely well beyond 3% of standard size. I will go for 165/65 R13 since it will surely be great. Does this affect the FE by any chance due to increased width? Santro gives some 13-14 in City and around 17-18 on highways with stock sized tyres.

If you want 175 section rubber, the correct upsize would by 175/65 or 175/60 R14, for which you'll need new wheels.

I haven't calculated FE tankful to tankful, but I can confidently say that there's hasn't been a noticeable drop. Did a 1300 km round trip in December and managed 17+ kmpl on the highway.

[rajivtelang]

Originally Posted by Geo_Ipe

If you want 175 section rubber, the correct upsize would by 175/65 or 175/60 R14, for which you'll need new wheels.

With stock tyres gc is some 172mm as per specification of santro. I will go with 165/70 R13 which will increase gc by 7mm i.e. 179mm in total. I feel it might be slightly better for Bangalore roads.
Need to check price difference between stock 155/70 R13 and 165/70 R13 though.

[suresh_gs]

Originally Posted by rajivtelang

175/70 R13 will be an overkill I suppose. It will increase the GC too much and surely well beyond 3% of standard size. I will go for 165/65 R13 since it will surely be great. Does this affect the FE by any chance due to increased width? Santro gives some 13-14 in City and around 17-18 on highways with stock sized tyres.

Between 165/65 R13 and 155/70 R13, the outside diameter of the former is more by 2.5 mm compared to the latter. This is the best recommended tyre upgrade with the existing rim size

[rajivtelang]

Originally Posted by suresh_gs

Between 165/65 R13 and 155/70 R13, the outside diameter of the former is more by 2.5 mm compared to the latter. This is the best recommended tyre upgrade with the existing rim size

With 165/65 R13 the size of sidewall is 165 * 0.65 = 107.25mm
Stock 155/70 R13 the size of sidewall is 155 * 0.77 = 108.5mm

So with 165/65 R13 the overall diameter will be less by 1.25 * 2 = 2.5mm.

This is not much with this upgrade. However if I choose to go for 165/70,

with 165/70 R13 the size of sidewall is 165 * 0.7 = 115.5mm which in turn increases the gc by 7mm and diameter by 14mm (7 * 2) compared to stock size.

Now my question is since the width remains the same between 165/65 or 165/70, a little more gc is always better for city like Bangalore.

Will that be a problem since Santro's gc is 172mm with stock size tyres. Anything little more is always better. What do you think?

[Geo_Ipe]

Originally Posted by rajivtelang

...with 165/70 R13 the size of sidewall is 165 * 0.7 = 115.5mm which in turn increases the gc by 7mm and diameter by 14mm (7 * 2) compared to stock size...

Are 165/70 R13s freely available? I didn't find Michelin or Yokohama tyres in that size when I was shopping. Quick net search shows Apollo Amazers in that size on Snapdeal, but out of stock.

[suresh_gs]

Originally Posted by rajivtelang

With 165/65 R13 the size of sidewall is 165 * 0.65 = 107.25mm
Stock 155/70 R13 the size of sidewall is 155 * 0.77 = 108.5mm

So with 165/65 R13 the overall diameter will be less by 1.25 * 2 = 2.5mm.

This is not much with this upgrade. However if I choose to go for 165/70,

with 165/70 R13 the size of sidewall is 165 * 0.7 = 115.5mm which in turn increases the gc by 7mm and diameter by 14mm (7 * 2) compared to stock size.

Now my question is since the width remains the same between 165/65 or 165/70, a little more gc is always better for city like Bangalore.

Will that be a problem since Santro's gc is 172mm with stock size tyres. Anything little more is always better. What do you think?

Increase in ground clearance by 7 mm could impact the CG which in turn could impact the dynamics and stability of the vehicle. May be experts can throw more light on this matter.

[rajivtelang]

Originally Posted by suresh_gs

Increase in ground clearance by 7 mm could impact the CG which in turn could impact the dynamics and stability of the vehicle. May be experts can throw more light on this matter.

Possible. Not sure if this is a recommended size at all. Better to stick to either stock size or at the most 165/65 R13 as an upgrade.

Originally Posted by Geo_Ipe

Are 165/70 R13s freely available? I didn't find Michelin or Yokohama tyres in that size when I was shopping. Quick net search shows Apollo Amazers in that size on Snapdeal, but out of stock.

You are right. Searched michelin india site. No such tyres available in 13" size. I am OK to reduce the GC by 1.25mm but FE and driveablity really matters for me.

[suresh_gs]

Originally Posted by rajivtelang

Possible. Not sure if this is a recommended size at all. Better to stick to either stock size or at the most 165/65 R13 as an upgrade.


You are right. Searched michelin india site. No such tyres available in 13" size. I am OK to reduce the GC by 1.25mm but FE and driveablity really matters for me.

The difference in tyre circumference between the existing tyre size and the new tyre size should be within +/- 3%

It is very much safe with 165/65 R13 but close to the border line for 165/70 R13.

[rajivtelang]

I got all 5 trouble making stock goodyears on my 2013 Santro upgraded to Michelin 165/65 R13 at Tyre Empire, HSR layout on stock rims. I got the volves replaced, wheel alignment and balancing done and entire package was Rs. 21500/-. I still feel it a bit expensive since the amounts he quoted was a bit much for wheel weights, volves and alignment. The amount he charged per tyre was Rs. 3850/- after discount. And as I said earlier they do not buy back any old tyres making things a bit more expensive.
Coming to ride quality, it is bit improved, tyre noise has gone away, need to have one car service also soon to really feel the difference. 4 tyres here are from date 4716 and one is 3816, I hope one 9 week older tyre should not make much difference.

[Tamarind]

Hi bhpians,

I have been very happy with the my stock apollo tires on Santro Zing GLS. Apart from the frequency of puncture, It was practically time and scenario tested for me across multiple occasions. Excellent Dry and Wet grip (I do equal amount of city and highway rides)

I did a tire change almost on 45k+ Km's and went for the same. It is almost 90k now and this time, was thinking about trying something else which is more puncture resistant but carries same grip and braking properties if not higher

More specs below

Current Tire spec: 155 70R13 Apollo Accelere
Current mileage: City - 12, Highways - 19
Last Purchase price on 2013: 2700/- per tire

Current budget: <3k per unit (+/-few hundreds is ok)
Expectation: Good road grip and braking properties + more resistant to puncture
Life expectation: 45k+ (since i have got the same with apollo accelere)

I understood accelere is stopped and amazer 4G has been promoted by Apollo. I thought why not consider other options. So i checked out

1. Apollo Amazer 4G - final price 3100/- per unit
2. MRF ZLX - final price 3150/- per unit

Need your "Experience with these options", opinion and suggestions even apart from the above mentioned options that i have gone through

[SamitMukherjee]

Reviving this old thread. Hope it is still active.
My Santro Xing GL runs on 165/65 R13 with alloys.
Recommended air pressure for Santro Xing is 30 psi.
But is it the right air pressure for these upsized tyres?
I maintain 32 psi on all the four tyres, but is it correct?

[sukiwa]

Originally Posted by SamitMukherjee

I maintain 32 psi on all the four tyres, but is it correct?

I have used both stock & upsized tyres on santro and for me 31 psi was sweet spot. 30 psi was quite soft for my liking and 32 psi made it a bouncy ride.