rx78788

I'm going to get some new tires with my christmas money. but what i want to know is what are the biggest tires i can get for the stock 15" rims.

and also I'm going to be putting a new clutch in my rx7. which one is the best one that will last the longest, and how important is it that i have the flywheel turned or resurfesed? Because i dont know how i'm going to get that stupid thing of. i don't have a wrench big enough for that huge *** nut. thanks guys

SonicRaT

iTrader: (6)

some 225's will fit without rubbing, but most don't. I'd stick with 205/55 on the stock 15's. As for getting the flywheel off, it's 2 1/16th IIRC, call local auto stores and see if you can rent one and an impact, zip that thing off in no time. As for suggesting a clutch, it depends on your driving style and if you have a n/a or a turbo (or supercharged, since that's becoming awfuly popular)

SureShot

I had 225/50's on my 91NA with the stock 15" wheels.
Straight ahead they cleared OK.
They only rubbed when hitting a bump while turning.

You do get about 1" tread shift when starting into a turn.

rx78788

what is tread shift? Also what is the 50 in 225/50's mean?

my driving style is aggressive and the engine is NA. which clutch should i get?

Rx-7Doctor

iTrader: (13)

I believe it is a 2/1/8i nch socket, you can rent a elcetric inpact but some do not have the power to take off the nut especially if was treated with redloctite. If you prurchase the flywheel stop sold by mazdatrix you can take a long breaker bar attached to your socket and extend a piece of steel pipe about 3-4 ft long to be used as leverage to take the nut off, Better if you have accesss to air impact gun.
Your not done there the flywheel is on a tapered seat and just does not fall off on its own. You need a puller that will line up to the 2 internal bolts and will allow like a harmonic balancer puller bolt to go thru the center of the eccentric shaft, you put as much pressure on this as possible then remove the top access plate from the engine to trans and get a sledge hammer and hit thebackside of the flywheel being careful not to hit the teeth, the flywheel will go flying forward. If its in your budget a lightweight steel flywheel is the way to go with a decent rplacement clutch pac from act or mazdatris or even centerforce. rx7doctor

rx78788

what will a lightweiget flywheel do for me. is it worth the money?

aznpoopy

if you install a lightweight flywheel you will probably feel a world of difference in low gears. on the other hand they are quite pricey. i haven't seen a lightweight flywheel for a car any cheaper then $250 bucks.

if u stick with your current flywheel, definitely get it resurfaced. dropping the tranny and doing the install is a big PITA; don't half *** it on one of the simpler steps.

for a n/a i don't think a performance clutch is warranted.

and keep your tires stock sized. no point in making them bigger. bigger then the wheel requires = possible fender rubbing, more sidewall flex during hard cornering, slower acceleration, etc etc. if anything look into getting some gripper tires like azenis or potenzas.

rice eart 17

hey man, in reading tire measurements, in ur cse u have a 225/50 15 the first number is the width of the flat surface of the tire, the second number (50) is the height of the sidewall, the higher the number the higher the profile and vice versa, and the last number is the diameter of the rim. im pretty sure man, hope it helps ya.

Aaron Cake

iTrader: (1)

Thread edited for a better title. In the future, try to use a descriptive thread title. You'll get better responses, and it will make this topic more relevant when people are searching.

rx78788

thanks aaron i will consider that next time i start a new thread. good advise

NorCal90

About the tire sizes, 225 is the width of the tread in millimeters and the 50 (in the 225\50 case) is the high of the sidewall as a percentage of tread width, meaning that the tire has 112.5 mm of sidewall. 225 X 50% = 112.5.

bennettaru

:S i have 205/60R15 on mine, no scrubbing and it's LOW, and i think, if it were possible and not silly, you could fit about 245s on mine, or a wider wheel with the same offset probably would still fit, but i do have coilovers, oh, conflictions...

just measure it yourself

Attila the Fun

iTrader: (1)

That depends on the manufacturer. I had 225/50s with no trouble, at all on a '90 convertible. However, other people have had complaints. One guy I know who has been upgrading his GSL-SE found there was as much as 1 1/4" difference between 225 tires from different manufacturers. What he ended up doing was buying 1 tire from TireRack, having it mounted, then running around a parking lot with the tire on the right front and then the left front. The left side was no problem. The right side, though, rubbed on the inside of the wheelwell. YMMV

Take a look at http://www.tirerack.com/tires/tiretech/general/size.jsp There is a drop down box with lots of other interesting articles, as well.

inflatablepets

215 60 15 is what I run. That is considered a plus zero in the tire business. Stock is 205 60 15 I have no sidewall flex issues or rubbing for that matter. The car looks a bit better with the slightly larger tires. I would not go any bigger. In fact the rear ones have about 5/8 of an inch before they rub the muffler shields.