Original stock tyre = 175/65/R14 (14 x5J ET45)

What you guys recommended for upgrade but still maintaining the fuel efficiency. Any opinion please?

Based on few review and experience collected from various posts, it can be concluded that:

195/50/R15 with 15 x 6.5JJ + ET35
195/55/R15 with 15 x 6.5JJ + ET38 > will rub fender when overload at rear
185/55/R15 with 15 x 6.5JJ + ET38 > this would be perfect setup

This post has been edited by spreeeee: Jan 10 2020, 11:48 AM

Bro,

-If u wan upgrade, then no fuel economy
-If u wan fuel economy, then no upgrade.

Pick your poison.


Then there's : If u wan fuel economy, then no grip.

=D

This post has been edited by BelaCHAN: Oct 3 2017, 03:35 PM

What i said above being what i said,

175/65 R14 is TOO THIN for anything above 90km/h,
hence your fuel economy.

By upgrade i assume you're looking at at least 185 tyre width?

The most eco of 185/xx Rxx will not be more eco than a 175 tyre width,
so you have to decide to drop the eco and get better tyres, or just stick to the speed limit and enjoy your eco (^-^)

185/55/R15
Toyo NanoEnergy 3
Yokohama BlueEarth AE01

Based on you eco requirements, the below is good,
but dont axpect to be more eco than your current 175 width tyres:

-Michelin Energy XM2
-Toyo nanoenergy3
-Bridgestone EP150 or EP200
-Goodyear duraplus
-continental CCC6

If you follow the law of physics, it is contrary to most people believe that wider tire has more surface contact. Actually, it does not matter if the tire is wider or narrower, same car on same tire pressure will produce same contact surface area size

if only affect very little on fuel consumption (un-noticeable) then is fine..

seriously? 15" rim?

this is new... You saying that 155/70r12 tyre has the same contact patch as 245/35R18 if the pressure is the same.... I must had slept during my form 4 physics class...

This post has been edited by raayeop: Oct 3 2017, 07:19 PM

I need to work the math or find article to prove it

Lol, probably did the same thing as you bro, TOTALLY dozed off! =D

Should be a little only, maybe 20 -30km less than stock

195/50/15 michelin ps3

Sarcasm aside:
1. if the new size has the SAME OR LARGER circumference, then with wider tyres, confirmed more contact patch.
2. if the new size has SMALLER circumference, then wider tyres does not necessary mean more contact patch.

But since we're talking about compatible replacements, so it would be within 2% speed (hence circumference) , hence circumference difference between any compatible size would be negligible, then hence point 1 above.

He wants eco bro

Obviously, with increased contact patch, if it's too much, your vehicle weight may NOT be enough to push it down in the event speeding through a puddle of water on the highway, and you'll aquaplane.

The golden question: How much contact patch is too much? =D

Can’t imagine bezza with 15”.. must be underpower?!

remember

grip good = noisy

grip so so = quite

grip good = expensive

grip so so = cheap

long lasting = no grip

EP200 ad discontinued. Now EP300
Dude, people ask for 14...

185 / 55 /15 make your car take corner easily and very confident. I always drive on MEX, seriously stock tyre setup wont dare take corner, as it feel want to turtle and it is more for straight line.

there are ppl change to 16", but more for stance style. Up to you la, for me 15" better hence a lot bezza owner looking for Alza rim.

15" rim need to be 36 or 38 offset with 6.5 or 7 jj. My car rim on P1 Buddy club offset 35 and 7jj. Ngam ngam not kena fender

Took some times but I found a good explanation. Like I said before the reason for better grip on wider tire are not because wider tire has more contact surface if the car weight and tire pressure are the same. Other factor contribute. the F1 car use wider tire for different reason too.

Hope this article explains it:

https://www.6speedonline.com/forums/996-tur...read-first.html

This may be applicable if the tyre is a flexible thing like a balloon.. the contact patch is determined by the weight (force from outside) versus the pressure (force from inside)... Tyre by itself is a rigid structure... following that person calculation whereby the contact patch is determined by the pressure, then how do you explain the contact patch for the tyre when it is not installed? Is it zero inch? Doesn't it touch the ground?

Bring a piece of glass to a friendly tyre shop.. Ask them to give you two tyres.. One a 155 width and another 235 width (do not install them or put any pressure).. Then press the glass on top on the tyre with a fixed force (say 5kg weight).. and calculate the area of the tyres pressing against the glass.... Do let us know your finding....

This post has been edited by raayeop: Oct 4 2017, 05:31 PM

Like I said the car weight is same, constant. The tires are all same pressure regardless size. I can guarantee the contact surface area would be the same. You can ask any professor in Physics

Pressure = Weight/Area. If Weight and Pressure are constants, the Area must also be constant.

correct formula but incorrect application... But if that makes you happy, why not....

why dont you try 185/60/14?
i may be wrong, it seems 14' dont have much choices for 185/55.

hence profile of 60 is the best, comfort and good handling.
FC wise, definitely will reduce but not significantly.

I like bezza too and also feel, 175 is totally insufficient.

that was my initial thoughts too, as the carexpert said bezza has no much diff than axia, and axia has been great with 185/60/r14

if so, then go for 185/60/14, at least no need to spend extra of rim upgrade.

do share with me what are the available choices for 185/60.
i just saw CC6 got this size available, you may consider to try this.

quiet and comfort.

wonder does tyre shop nowadays accept trade in.. lol

btw.. what is default tyre brand/model for bezza?

Silverstone Kruizer or Brigestone ecopia ep150.

silverstone for lower end bezza model?
bridgestone for higher end bezza model?

past buyers, what bezza model u get, and what tyre u get for that model?

they still do, but be prepared, their offer price is very pathetic..
i rather you sell on your own

like 50% price slashed from market price?

Are you using this setup?? Does it really affect your fc??

wanted to know also, can't imagine the fc if bezza on 15", also does it really fits?

Pretty good summary there!

I just change my tyre setup to this setup. I am a car noobie i just saw nice rims so i fix it didn't know it would affect the FC?

The tyre shop didn’t give advice?

Nope, i only ask could it fit and they say ok. Just reading about it will effect FC now..

u mean if i have flat out all my tyres now, can get back to kuantan from KL with 1 litre petrol?

i also want to change my tire

decision between:

175/65/R14 (original size) vs 185/60/R14

For Dunlop Sport J5: RM 120 vs RM 125 per donut exclude GST

of coz 185/60/R14

the tire would be thinner iinm? will it sacrifice comfort or not much to tell the diff?

haha. but many of them still believe long lasting + good grip comes together....

Can anyone help to rank tyres based on quietness?

It's very easy to figure out alternative wheel tyre combinations. The objective is to get the same overall diameter of the pair. For 175/65/14, there are no alternative 14" tire sizes that will give exactly the same overall diameter. The closest is 225/50/14 (-0.4% overall diameter) or 195/60/14 (+0.9%)

If upgrade to 15" rims, can go for 185/55 (nice low profile) or 225/45 (boy racer low profile) both no effect on overall diameter

For fuel economy, they say if your new combi weighs more - then naturally FC will suffer. Hahaha go weigh your stock combi & when you shop for new rim & tires, bring a weighing scale ensure weight no increase

For handling, the boy racer 225/45 might seem better intuitively - but the engineer research says you have to make sure you don't alter the "scrub radius" too much - hahaha go google that - that has to do with the rim offset & the overall geometry of the suspension system. Also the research say wider tires will affect your pickup ie look nice but cannot run

For cost, of course change rim burn bigger hole in pocket la. Even those 14" combi mentioned, you definitely need to change rim for the 225/50, not sure about the 195/60

Me no genius - use this online tool . Have fun!

seriously 225/50/14 ?!

This post has been edited by spreeeee: Jan 29 2018, 11:58 PM

Wider tyre contact area is the same compare to ori as long as tyre pressure are the same.

Hi sifu may i ask will a setup 195/50/15 give the same fuel comsumtion as 175/65/14? Is it equal to each other but only difference 195 one will give you better grip???

Should be negligible difference. The 195/50 is wider hence more traction/rolling resistance in general but the overall diameter is also a bit smaller than the 175/65 so they kinda negate each other, provided both are similar tires. You should use 205/50 though to maintain about the same diameter but the rims should also be wide enough for 205 tires (6-6.5jj wide).

You can check with this conversion calculator:
https://www.wheel-size.com/calc/?wheel1=175...wcl=30mm&sr=0mm

Hi thanks for the reply. I don't know how to read that charts. I assume you know more then me regarding tyres. So there would be no problem upgrading my bezza tyres to the 195/50, would the bar be able to handle the extra weight?

I just want to eliminate the floating feel. The 205/50 you suggest would be sticking out quite a bit so would prefer the 195/50.

note that bezza suggest use 6 or 6.5jj rim.7j with 195 width tyre will rub fender.

Hi bro what is this jj and how to check it. I just know the rim is 15 inch that's all.

new rim they have the spec on the box or u check behind the rim.written on the spoke usually.

What bar??

any1 upgraded, come share your photos, and prices.

recently having the same dilemma of changing bigger rims like let's say 175/65R14 to 185/55R15 like everyone else recommended. But i guess i'll stick with the same original sizes as 14 inch (Bezza also), I'll go for Dunlop 185/60R14, thread width from side to side compare for 185/65R14 VS 185/60R14 is obvious, so from outlook, people seeing from behind, the tyres look wider than stock 175

is only additional 10mm.. not obvious though..

ya from paper it's 10mm, but that is sidewall to sidewall, i'm talking about tread width, different brand have different tread width, for 185/60R14, i saw the widest is Dunlop so far

how about 195/55R15 tyre?Does it fit?

If 15”.. Should be best fitted with 195/50

Based on few review and experience collected from various posts, it can be concluded that:

195/50/R15 with 15 x 6.5JJ + ET35
195/55/R15 with 15 x 6.5JJ + ET38

195 50 15 Michelin PS3 .. superb grip both dry and wet.. high speed stability

PS3, of coz!

Just to update, the 195/55R15 tyre will fill up the wheel well arches nicely. Cheers.

Belacan is right.
You cant have your cake and eat it too. Only 1 option seems legit.

So 195/55R15 is the most perfect choice?

The "best" size is 185/55R15. Due to limited choices in this size(and more expensive) the next logical choice would be 195/50R15 or 195/55R15 depending on the rim setup.

bro, how about the comfort? tyre noisy or not?

if compared against the stock tyres it is less comfort and noise not much different
can feel the rubber on the road and more stable

Hi sifu i am using the 195 50 15 setup but when my car have more then 2 people and when drive more then 60km/h when going over any slight bump the tyre will touch the top part of car. Is this the rim problem or what?

Touching the front or rear fender? Whats your rim spec?

sorry bcs i am driving i cant really tell which fender, just can hear the sound when it happens. Also not sure the rim spec, the shop guy just show me a few rims that match with my tyre and ask me to pick which one i like. I put too much trust in him, he told me my ride would feel much better then the original tyre after changing.

This still valid?

195/50/R15 with 15 x 6.5JJ + ET35
195/55/R15 with 15 x 6.5JJ + ET38

Yes. My first upgrade was 195/50R15 with 15 x 7JJ + ET35. Rear fender rubbing when full load and going over hump. Changed to 15 x 6.5 JJ + ET35 with same tyre and no more rubbing at rear fender.

Sorry if I sound harsh but we as consumer must know what we bought and not just trust the seller. Its true to a certain extent that the handling will improve with the upgrade but that does not mean you have to suffer for it.

First thing is to find out what is your rim specs and from there hopefully can determine the next course of action. Cheers.

Hi in the receipt it is call 1121 15" sports rims. hope this helps??

The receipt only states the rim model no and not the specs which you need to know. Get someone to remove one of your rims from the vehicles and take note of every numbers/alphabets/symbols you can find behind the rims.
Once you have this info, come back here so we can help you make informed decisions...

There is Michelin PS3 available for that size, too

Yes rim problem, get the 15 x 6.5 et38

195/50/R15 should be 6.5JJ + ET35 ?

i don't know, et38 works for me

do u know the stock rim 14", what is the spec?

5JJ ET45

out of topic, do u also know the technical spec for new-myvi 15" rim? wonder can it fit nicely on bezza, and also recommended tyre profile.

As explained earlier, 195/50R15 with 6.5JJ + ET35 should be fine..

but was asked to get ET38, any issue?

ET 38 would be better as you can choose 195/55R15 tyres.

But he/she mentioned Et38 for 195/50/15

Also no issue... ET 35 is the Max offset for this size without rear fender rubbing.

185 55 15 / 6.5jj / offset 38 / KW axia adjustable / Goodyear / P1 racing r
China rim

any issue with 15x6jj? not sure the offset for now.

No issue, don't worry...

Thanks Spreee for leading me here. I'm still new to understanding tires and such.

My Bezza originally came with Hankook Kinergy EX 175/65/R14.
How viable is it to go 185 or even 195? I've read through the posts and read a little on terms like ET (Einpress Tiefe), distance between the mounting surface and the geometric centre of the wheel.

TLDR...I'm not really one of those really detailed person, nor really into physics and stuff. Just a normal slap on and go user. I understand you can't have ECO and better grip at the same time, so what are most of you guys view on going wider tires?

im using 185/60/r14, stock rim.. fc wise is the same, no difference.. but slightly more stable due to slight wider tyre..