285/30-18 Front tires with deleted p/s?
 

Am I crazy for even considering this?

I just picked up a set of four 18x10 +50 Fikse Profil 5s, and am really considering going with the Yoko Advan AD07s in the size listed above at each corner. I'm not running p/s (i have the gotham loop) and don't really want to re-install it.

My other option is going for something like a 255/35 or 265/35 in front, but only the latter is available in the AD07. 255s on a 10 inch rim might look kind of funny (stretched), and the 265s have a (relatively) tall rolling diameter of ~25.3 inches compared to the 285/30 rears at 24.8 inches. I have a feeling the taller 265/35s might give me some fitment problems in the front as well.

It's a street car more than anything, hoping to see some road race time this year.

If you were me, what would you do?

I would go with 265 front and 285 rear, except with a DOT R tire that is much more closely matched diameter wise like the Pilot Sport Cup or g-force R1. The diameters for these brands in 265/35 and 285/30 are very close. Look at the Revs per Mile spec instead of the diameter dimension.

Another option is the Toyo R888 which is available in 255/35 and 285/30, but the 255/35 is taller (based on RPM) than the two brands mentioned above in 265/35.

I have never tried 285/30 in the front, but have tried 265/35 and 255/35 on a 9.5" +50 wheel with a Maval manual rack. You will get liner rub with a sharp turn. Parking is a bitch, but at speed it is fine - not overly darty either, and of coarse us manual steering types love the feedback from the steering wheel.

Maybe it's just me, but I wouldn't like it to have the front/rear tires look different on the rim, i.e.: one stretched, one not. If I really didn't want to run a wide front, I'd be considering sending two to Fikse for new rim halves to make 'em 9".

That said, I run no P.S., with street 255 front tires, and I don't even notice it anymore. I also have 285 Hoosier track tires though, and the low-speed resistance isn't nearly as bad as you'd imagine. With a street tire and the right alingment, on a car I'm sure you don't daily-drive, I think a 285 would be fine. You'll also appreciate that 285 on your few trips to the track, if you've only got one set of wheels.

Do the 285's.

Rich,

no sweat on no P/S.

howard

^^^

Yeah, think of it as a free workout.

I missed it Rich, but what are you running up front now? I would think that the jump from say a 255 to a 285 wouldn't be a HUGE deal, but it'd certainly be noticable.

As a fellow non p/s member I'd vote that you'll be ok. As I'm sure you've become accustomed to, once you're moving the resistance is pretty minimal.

It'd sure be nice to be able to rotate your tires too if the wheels are all +50. That's actually the big draw for me when looking at getting replacement track wheels/tires in these sizes.

My current FM5s are 245/40 and 275/40 on 17x8.5,11. The rears give a fairly nasty 25.7 inch rolling diameter, it'll be nice to go back to a stockish 25 inch and really get to use my 4.3 gears :)

I have a FC, but I run a 255 up front, with no ps. I do however have a non ps rack. No problems here. But I do 13b dumbbell curls 3x a week:)

A few teaser shots ;)

Edit: They only weigh 23 pounds each in this size....if memory serves, my 17x10 FM5 Classics weigh about 25 pounds a pop. The profils are supposed to be lighter and stronger, so it makes sense I suppose :)

https://www.rx7club.com/attachment.p...6&d=1206581836
https://www.rx7club.com/attachment.p...7&d=1206581836
https://www.rx7club.com/attachment.p...8&d=1206581836

nice ;)

Good stuff:D
https://www.rx7club.com/attachment.p...8&d=1206581836

I would never have a daily driver w/o PS... it was major pain in the ass while my car didn't have it, and my car has stock size tires(for now). I don't find the steering feel to be much different at higher speeds so I don't see the reason not to run PS unless you convert over to Maval steering rack.

I should have mentioned in the original post that the car is for weekend fun runs, I have a company car for weekday driving.

weighed mine at 19lbs without tires...

Man up, and run 285 up front! ;p

j/k ;)

I run 245 to all four and it's not really an issue. I plan to run 285 in the front this summer, and I am hoping the difference is marginal at best...If not, I will do a few more reps on the butterfly than usual... ;D

Nice wheels Rich. Don't be a woman and put the 285s on. Only parallel parking will suck!!! haha

Well then I guess my memory doesnt serve me very well at all :lol:

Great looking wheels Rich.

If I hadn't already had the, um, pleasure of keeping Fikse's polished regularly, I'd be envious :-)

Ha, thanks peter :)

I think I'm going to just bite the bullet and plunk down ~$1600 (!) on a set of four Yoko Advan AD07s in the big boy size.....if it sucks too badly, I can always reinstall p/s :D

do it up!
I run those exact tires up front on my FC and its no problemmo.
those are aamzing tires, you will be stoked!

Obese owen (heh, i amuse myself), you're running w/out p/s I presume?

ohh rich ohh rich.. im sorry but i just don't think it will work out.. the perfect solution to this problem is to hand me your keys and start over with a new FD :)

hey its worth a shot!!

in reality.. im sorry i really cant help you but the new wheels i like a lot!! nice find!

You'll be fine with the 285's up front. You will really notice it if the front tires get low on air though! For the street, running max rec. tire pressure gets you good mileage and tire wear on the wide guys. It also makes turning a heck of a lot easier! Then you can lower pressure at the track for a bit more grip.

Good point, 65imp, thanks :)

Snapped a shot out in the garage.....you can see some of the minor differences between the Classic and Profil series.

https://www.rx7club.com/attachment.p...0&d=1206904586