3rd account? As far as im aware, I have 2. I see nothing wrong with a second account. Dave has atleast 2 for a start and continually talked to each account as if they are seperate people/rabbits.
alloys on a cinq...
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alloys on a cinq...
stealthstylz
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The weight of a wheel only makes a slight difference. The main problem is the larger diameter of the tyre. The larger diameter in effect raises the gear ratio. The example given is a 185/45 R15 tyre versus the standard 165/55 R13 tyre. The 165/55 R13 tyre is 36mm smaller in diameter than the 185/45 R15 tyre. This may not seem much, but for the same engine speed your road speed will be ~7% higher e.g if you were doing 3000rpm at 70mph with 165/55 13, with 185/45 R15 at 3000rpm you'll be doing 75mph or so.
This increase in tyre size is fine on larger cars with enough hp (and more importantly torque) to pull with the increased gear ratio and make use of the extra top speed gained. However on low hp/torque cars like a cinqucento it will make a noticeable difference to acceleration but without the gains as the car won't have enough power to make use of the extra top speed.
As an example, when I used to drag race my old Clio I changed from 15" front wheels with 195/50 15 tyres to 13" front wheels with 215/50 13 tyres. Back to back tests put showed that the smaller front wheels gave around a 0.4 second advantage.
Also as an aside. A cinq on 15s must handle awfully. Most aftermarket alloy wheels weigh more than OEM steelies. The extra unsprung weight will have a massive affect on the handling.
I've never owned a cinq but i'd stick to 13s or 14s if I did. Theres always the fact that they'll look a lot more balanced rather than like a roller skate.
Matt
This increase in tyre size is fine on larger cars with enough hp (and more importantly torque) to pull with the increased gear ratio and make use of the extra top speed gained. However on low hp/torque cars like a cinqucento it will make a noticeable difference to acceleration but without the gains as the car won't have enough power to make use of the extra top speed.
As an example, when I used to drag race my old Clio I changed from 15" front wheels with 195/50 15 tyres to 13" front wheels with 215/50 13 tyres. Back to back tests put showed that the smaller front wheels gave around a 0.4 second advantage.
Also as an aside. A cinq on 15s must handle awfully. Most aftermarket alloy wheels weigh more than OEM steelies. The extra unsprung weight will have a massive affect on the handling.
I've never owned a cinq but i'd stick to 13s or 14s if I did. Theres always the fact that they'll look a lot more balanced rather than like a roller skate.
Matt
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Oh, give over
Having an account for Binki is (and always has been) a bit of fun, even though we all know it must be someone else typing. With regards to what Fiat did with the Abarth FD ratio - there's roughly a 3/4 inch difference (an increase) in rolling diameter from the standard 13" set up, but the question is how much do the overall masses of a correctly inflated 13" wheel and tyre combo differ from that of the 14" Abarth combo. I don't know.
It's an impossibility for a larger wheel and tyre combo to result in acceleration (to a significant degree) if the overall mass, tyre contact patch size and rolling diameter/circumference are similar.
Making such a sweeping statement as 'larger wheels will make the car slower' is not necessarily right.
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cant belive you dont belive in binki, you even seen him an still not belive in him
dave dont exist,
https://www.fiatforum.com/members/bushboy2
