is it true that the bigger the wheel the slower your acceleration will be? I have 18s n thinkin bout the RTR 19s? how much slower will I be with the 19s? thanks
It's not a giant difference but you also have to think about tire price, 19inch tires are ridiculous, you'd be better off getting more 18's or jumping to 20's
If you run 20's, you should consider larger brake discs, as the stock ones will look silly behind a 20 inch rim.
It's all proportional. You can go with a 19 inch rim, and a smaller side height tire to make it the same (or very close) total circumference of an 18 inch rim with a higher side height tire. If you take what you currently have rim and tire wise, plug it into this link as "what are you running now", then play with a 19 or 20 inch rim and tire combo as "what would you like to run", you might be able to keep the MPH very close; just be realistic with the width, and stay with a 255/40 (or 255/45) tire for a stock 8 or 8.5 inch wide wheel. Anything wider than 255 gets you into wheel rub boundries on the fronts without going with spacers or offset wheels. Some say they have gone to 305's on the rears using non offset wheels or using spacers. It's the front wheels you have to be concerned about:
I used to have 235/40/18's on a set of stock GT wheels. I now have 255/45/18's as you have. You can safely mount these tires on 8 inch to 8.5 inch wide rims. If you had a 9 inch rim, you'd want to go wider than 255's, as the sidewall bead would have problems staying sealed on hard cornered turns. Then the problem of rubbing comes into play for the front tires. Getting wider that 255 can be done in the front, but you start thinking of spacers or staggared offset rims to be safe. But too wide and staggered offset or spacers make the wheel stick out, and possibly rub on the fender edge. I'm sure others will chime in, and I expect this thread to turn into a tire/wheel combo post!
But your 255/45/18's are just fine with 8.5 width wheels.
I have the 2013 premium rims. they not bad looking but I'm going for a white/black scheme and it looks a bit awkward with the way I have it now. I was thinking about just painting them gloss black for about $150 ( plastidip is more of a matte black) vs. the $2k set up from RTR or even the $1600 AMR set up. do you think it would be huge difference in appearance if I went with black 18s vs. the 19s.
Ok good! I was worried for a moment lol. I had to get spacer for the back cause they say too far in like this. The drive has the new spacer and the passenger side doesn't
I have stock pp wheels and they are super light. I bought an extra rim and I was shocked at how light it was. Downside is it cost me $1k from Ford just for the wheel.
To answer the original question, no a larger diameter wheel/tire will not make your car slower, but a heavier one will. I just went to wider rear tires and wheels that are about 25 lbs lighter than the rear wheels and tires I had on before and can tell a huge difference in acceleration
just buy 19 in FORGED wheels.
you'll get the size you want, and the lightweightness of a regular wheel.
---------- Post added at 10:20 PM ---------- Previous post was at 10:17 PM ----------
and buy regular weight I mean this wheel is going to be really light
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