Tyre Upgrade problem

[kailashnj]

Hi Guys,

I have an Indica 2005 model. Recently I upsized the tyre to 175/70 R13. Now after the upsize I feel the brakes are not working fine and when driving fast and you brake the feel of braking is absolutely nil. This is a huge concern for me.

Have you guys experienced such kind of problems after tyre upsize.

Regards

[kpzen]

Are u running on stock rims?

BTW 175/70-13 is a wrong upsize.

[rks]

Originally Posted by kailashnj

Hi Guys,

I have an Indica 2005 model. Recently I upsized the tyre to 175/70 R13. Now after the upsize I feel the brakes are not working fine and when driving fast and you brake the feel of braking is absolutely nil. This is a huge concern for me.

Have you guys experienced such kind of problems after tyre upsize.

When tyres are brand new, they may not grip all that well for the first 500 kms or so (this is mentioned in the tyre bible at the carbibles website). After tyres are run in, braking should improve.

With wider tyres than stock, dry braking should normally improve unless you got poor quality tyres. Hope you are maintaining correct tyre pressures. Wet braking could be worse than that of stock tyres because of increased possibility of aquaplaning, but I don't think this is the explanation in your case. There is also a remote possbility that your wider tyres ae fouling with the brake callipers. Note that as speeds increase, the tyre sidewalls will flex more and possbility of fouling increases. In any case, get your brakes thoroughly checked and also check the clearances from the tyre sidewalls to rule out fouling (I read somewhere that there should be minimum of 4 mm clearance to account for increased flex at higher speeds).

[kailashnj]

I have upsized on the stock rims.

I have upsized the tyres from Maxxis. These are Michelin Brand Tyres and are of very good quality.

Some how at times I have notices that there is no bite in the brakes at all. Today when I was doing 80 kmh on highway and wished to stop could not and hence i pumped the brakes. This helped in stopping but the split second where the car did not stop gave me goose bumps.

[sukiwa]

Want to understand reasoning behind upgrade to 175/70 R13.

I believe stock size for Indica 2005 model is 165/65 R13.

[dinu2506]

I do not think this has something to do with the upgrade although the upgrade is not a correct one. The right upgrade should have been 175/65 R13.

But Kailash, please be careful and get your braking system thoroughly checked. I would not suggest using the car till this is sorted out.

[kailashnj]

The reason I upgraded the tyre to 175/70 was to give the car a little extra ground clearence. This was suggested by the person selling the tyres. Actually Indica has a big problem of rim bending. Hence with a bigger profile tyre this would not have been a problem is what the guy was telling me.

Hence I upgraded to this tyre.