11-05-2006, 07:30 AM
ok,
on a focus the difference of wheel/tire weight is not going to have an effect on the handling of the car unless you are a national level AutoX, Solo1 or Club racer. you will not feel ANY difference in a wheel that is 1" taller with a thinner profile tire unless you are going from really really s***ty tires to really really good tires.
the weight of a wheel/tire combo also will have little effect on the handling again unless you are a national level racer or are talking about going from a 15lb rim to a 30lb rim. most rims made in the last 5 years are not going to be above 20lbs in a 16" size and iirc, the stock 16s are about 17lbs. the differences in handling and performance from the weight of the setup will make a difference but i highly doubt you will be able to feel any difference. considering it takes a very consistant, very skilled driver to be able to show repeatable results on the track, you will probably never be able to duplicate such things on the street.
the difference in the speedo has nothing to do with the weight of the rim tire combo, it is a matter of Math and rotations per KM. you remember that whole Pie-R-Squared thing from school... a shorter tire requires more rotations per mile. the car is calibrated for a certain size tire for accurate speedo readings, altering the size of the tire changes that calibration.
weight weight may have an effect on gas mileage but again, the differences are so minimal any true effect would be masked by standard driving irregularities. unless of course you are talking a 10lb/corner difference.
205/40/17s are smaller than the 205/50/16s by -2.618% or if your speedo read 100km/h you'd actually br traveling about 97.4km/h.
fact of the matter, your suspension will dictate the handling of the car no matter what rim tire combo you put on. HOWEVER the tires are the vital link between your car and the road. if you are looking for the best performance you are better off NOT looking at cheap tires like the Nexxan or similar garbage a lot of people like to suggest. Toyo T1-Rs, Falken FK451s and 452s or RT615s and the Kumho MX are all extremely solid tires at decent prices. look at those in the size you want and you wont be disapointed.
Cornflakes,
i'd suggest a 16" with a 215/45/16 tire.
you can run a 17 with a 215/40or45/17 without issue aswell, i currently run a 215/40/17.
Go with something like a 16" Rota Slipstream and toyo T1-R in 215/45/16 and you wont be disapointed!
on a focus the difference of wheel/tire weight is not going to have an effect on the handling of the car unless you are a national level AutoX, Solo1 or Club racer. you will not feel ANY difference in a wheel that is 1" taller with a thinner profile tire unless you are going from really really s***ty tires to really really good tires.
the weight of a wheel/tire combo also will have little effect on the handling again unless you are a national level racer or are talking about going from a 15lb rim to a 30lb rim. most rims made in the last 5 years are not going to be above 20lbs in a 16" size and iirc, the stock 16s are about 17lbs. the differences in handling and performance from the weight of the setup will make a difference but i highly doubt you will be able to feel any difference. considering it takes a very consistant, very skilled driver to be able to show repeatable results on the track, you will probably never be able to duplicate such things on the street.
the difference in the speedo has nothing to do with the weight of the rim tire combo, it is a matter of Math and rotations per KM. you remember that whole Pie-R-Squared thing from school... a shorter tire requires more rotations per mile. the car is calibrated for a certain size tire for accurate speedo readings, altering the size of the tire changes that calibration.
weight weight may have an effect on gas mileage but again, the differences are so minimal any true effect would be masked by standard driving irregularities. unless of course you are talking a 10lb/corner difference.
205/40/17s are smaller than the 205/50/16s by -2.618% or if your speedo read 100km/h you'd actually br traveling about 97.4km/h.
fact of the matter, your suspension will dictate the handling of the car no matter what rim tire combo you put on. HOWEVER the tires are the vital link between your car and the road. if you are looking for the best performance you are better off NOT looking at cheap tires like the Nexxan or similar garbage a lot of people like to suggest. Toyo T1-Rs, Falken FK451s and 452s or RT615s and the Kumho MX are all extremely solid tires at decent prices. look at those in the size you want and you wont be disapointed.
Cornflakes,
i'd suggest a 16" with a 215/45/16 tire.
you can run a 17 with a 215/40or45/17 without issue aswell, i currently run a 215/40/17.
Go with something like a 16" Rota Slipstream and toyo T1-R in 215/45/16 and you wont be disapointed!