Need Help! Bigger Tires?
 

If anyone is following my other thread they may have seen that my tire and rim got messed up by a large chunk of concrete in LA yesterday.

I need a new wheel and since I was already thinking about putting larger wheels on, now would be a perfect time. If i do it I'm only going to go from R13s to R14s. This would be a 7% decrease in rpms. I'm going to only put the biggers ones on the front so i halve any weight increases and spinup losses. I have no rpm gauge, but it feels like the car is geared too high on the highway.

My car has plenty of power going uphill and I'm going to take out at least 25 pounds of weight if i do this.

I am worried about messing up the torque.

Do people agree that this mod makes sense to do?

Thanks for the help.

A 7% increase should be fine.
You will even find that you have more tire selection with 14 inch wheels.

What is your lug pattern and stock tire size?

Mazda Miata and MX3 stock wheels can be found for cheap and are decently light. My MX3's are ~12.5 pounds a piece. They are 14x5.5".

If you want the best mpg tire... Bridgestone Potenza RE92 165/65R14 @ 50-55 psi :thumbup:

I'm running a cheap Chinese tire that is 1" bigger than stock, 24.3" vs. 23.4" I have done very well with them, even with the tires being non-LRR and bigger than stock.

Here's a pic of the tire
 

TY for the help

4 lugs

I'm thinking i might look around a junk yard. What else might work for my axle?

It looks like 4x100, though it could be 4x108. A quick Google search would tell you exactly.

You'll be lucky to find any lighter weight alloy wheels in the JY. Most of what I see are steelies that weigh 20-25 pounds/piece.

Craigslist has been my best buddy when it comes to finding wheels. And Car-Part.com--Used Auto Parts Market

A 1988 Corolla has a 4 x 100mm bolt pattern.

Thanks Gasoline Fumes :thumbup:

There's a few options on LA's CL. Some light HX wheels and steelies.

https://losangeles.craigslist.org/se...l&query=14x5.5

I see mention of one spec, but there are three you need to consider/match

Bolt pattern you know about, the 4x100mm, and that's foolproof.

Center bore, the center hole in the wheel must match the hub or you can't balance it. Spacers get lost. Get this right.

Offset, be sure to get FWD wheels, high positive offset, if you like your drivetrain to work.

HAve fun,
Frank

Another concern is the lug nuts when using different wheels. Honda and VW use a ball seat and Toyota uses a tapered seat. Honda lug nuts will fit Toyota studs.
http://ecomodder.com/forum/attachmen...1&d=1449817855

Is the center bore really an issue? I just put Subaru wheels with larger center bores on my mother's Prius for the Winter. Seems fine so far with the lug nuts centering the wheels. And I look forward to the wheels not getting stuck to the hubs over the Winter!

Ok, I think there is some confusion as to the effects of different wheels/rims. Changing the RIM size does not change the RPMs at all, it is changing the TIRE size that affects the RPM, specifically the overall circumference of the tire. Now a different rim size may allow you to choose a different tire size to change the RPMs, but if you switch from 13” to 14” wheels but put the same size (diameter) tire on them, your RPMs won’t change at all.