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Archive for the ‘General Information’ Category

Well most of us probably ask ourselves that question on occasion!  Most days I’ll field a question from someone looking to BUY a Classic Mini, and that’s a good thing for anyone looking to sell theirs!   People around the US have heard that I know the cars very well and look me up for a quick opinion about one that is for sale.  I can usually pin down the true age if the car has been “re-VIN’d”, at least close enough to ID all the important things.  We try hard to make all sorts of info and tools available in the form of technical articles on MiniMania.com and it’s working… they get used often!  With just a few minutes of research, you can

Lately, I’ve noticed more questions from people looking to sell an Old Mini that has been parked.  I think people mistakenly think we are a dealer or will “consign” the car, and that is NOT so!  We offer the “Cars For Sale” feature as a service to the Classic Mini Community, but Mini Mania does not buy or sell cars!

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This is definitely a topic that keeps coming up!  What wheel and tire combinations can be made to fit a Classic Mini?  Just a few days ago, had a customer call for “175/55-10”  as though they could just be picked off the rack!   Hmmm, I’ve never seen such a size, except maybe on a Yamaha Banshee Quad for doing burnouts!

I thought it would be a good time to update what combinations are currently available, and a little bit about fitting them to most Minis.  It’s been pointed out by me and others, that all the common combinations end up having about the same overall rolling diameter.  I did some measuring and comparing sizes in a post on the Mini Mania Forum to show that the most popular 10 inch wheel and tire combination is only about one half inch smaller in overall height than the popular (and really the only!) 13 inch tire that fits a standard-ish Classic Mini.

Now that seems to make it sound rather easy to just bolt up what you want, when in fact, very careful set-up is needed to ensure clearance  from the body, and safety for brakes and handling.   Almost any increase in size will require careful consideration.  Is the extra width “inboard” or outward as the popular deep-dish look would result in? Obviously, the former might have the tires contacting the inner fenders during turns, and might require wheel spaces or limiting the steering travel as Rover did with the big wheels of the late 90s.  The ‘deep-dish’ look will certainly require clearance be cut in the front fenders in front of the tires as the ‘scrub radius’ will get much wider.  Depending on enforcement in your state, and how much you drive in the rain, you may need flares to cover up big tires that stick out too much.

Most clearance issues will be with the front wheels, as the only thing you can do for the rear is to be sure you don’t have inside contact and that the car sits high enough to avoid contacting tires that are at all wider than stock. Even when big flares are installed, the rear wheel-arches are seldom trimmed, as loosing the seam results in very flimsy sheet metal.  Stiff suspension keeps the amount of deflection in check, and many of us want our cars low enough that we know there is a danger of contact with the body if driven aggressively or with more weight in the car.  The dry rear suspension had no bump-stops, relying on the rubber cone spring itself to limit travel. Depending on your set-up (say with coil springs and wide tires), you might consider the aftermarket kit we offer C-SRP015 to protect your investment in tires and paint!

Here then in a nutshell  are all the common choices:

10 INCH WHEELS:  Most Minis produces before 1984 came with 3.5″ x 10″ rims and 145/80-10 tires.  This was about the only size that ever fit within the fenders with no flares and not much chance of contact with the body!   Ever the Cooper S and 1275GT models had the little tires on 4.5″ wide wheels to barely clear the fenders and fit within the spare-tire well.   A change to the popular 165/70-10 tires required the (usually Hydrolastic) suspension be in top shape, and most often small flares to contain the tires.  Just about any aftermarket wheel would use the wider tires and require the installer to verify clearances, and that means make sure the suspension is up to snuff.  For 6″ wide wheels, body clearance and some kind of flare is almost always necessary.  I like the skateboard look too, but you’ll throw water and road debris all over your car and at anyone nearby!

12 INCH WHEELS:  By 1984, the Classic Mini finally got some decent disc brakes as standard across all models.  With the bigger rotors and calipers, the standard wheel size had to grow to 12 inches.  Many find these Minis with 12 inch steel wheels to look rather clumsy as they were tall and narrow, and the scale of it is not as ‘pleasing to the eye’ as the beloved 10 inch wheels were!  Luckily, the aftermarket provides an alternative that might just be the best compromise.  The Yokohama A539 in 60 series is just about the same overall height as the 10 inch combinations, fills the wheel openings nicely, and provides a less harsh ride than the 13 inch option which MUST use a 50-series tire.  Body mods will likely be required, at least in front, as the tire and the resulting scrub radius are considerably wider.  A lower cost tire in the same size is available from Falken.  Wheel sizes are either 5″ or 6″ by 12″ for the 165/60-12 tires.  Obviously the 5″ is much more likely to clear the body, and/or work without flares.

13 INCH WHEELS:   Finally, the size many love to hate!   The only commonly available tire for the Mini for 13 inch wheels is the 175/50-13.   We stock the Yokohama A539 as well as a lower cost Nankang tire from Taiwan.  These tires will reasonably fit wheels from 5 to 7 inches in width, with 6″ being ideal.  I run the Yohohamas on my own modified 66 Cooper S with 13″ by 5″ wheels and no flares!  Yes they stick out a bit, and yes the front wheel opening has been enlarged to allow the car to sit quite low without hitting the tires as long as I’m reasonably careful.  I re-formed and welded the seam to keep the required stiffness of the front wings, and Hi-Los let me quickly raise the car up a bit when my 300 pound brother-in-law wants a ride!   Rover offered a 13″ by 6″ wheel with this tire size as an option for the “Sportpack” model of the late 90s.  Those models had larger fender openings, extra ‘stiffeners’ to support the front wings, taller joint knuckles to raise the ride height, limited travel steering racks, AND huge flares to cover the tires!   So yes, body modifications are required for just about any 13 inch wheel combination.

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Well, I almost have the powers that be convinced to take on what should be a VERY interesting project that I can feature here as we make progress!  We have an orphaned Mini Pick-up shell in FIBERGLASS that was custom-ordered with a bit of an “Extra Cab” and correspondingly shorter bed… Only about four inches, so not drastic, But a nice bit of extra room for seat adjustment for my six foot frame!   I have a few ideas, and welcome any of your suggestions as to what to build!

One thought I have is to look for a Suzuki Samurai donor, and build a Mini “Monster Truck” 4 wheel drive!  This is a totally new aftermarket body shell that has a bit of shipping damage too, so I shouldn’t have any griping about “ruining” an original rare pick-up.  There is a thought about doing a Honda VTEC, justifiable for the same reasons, but for some reason, those have not particularly appealed to me!

I have been considering building a “998 on steroids” if you will….  the availability (actually the lack there-of!) of 1275 units to build these days has me rethinking the viability of a serious 998!   I’ve always advised people to build a 1275 if they are going to bother….  just plain old more bang for the buck!   A tiny engine still has all the same parts, and if you’re spending several thousand dollars, you’d much rather end up with 70-80 HP over 20 -30 from a 998!

So maybe I can go BIG with some .130″ oversize pistons that are supposed to be for the 1098 from Australia, which was supposed to have extra-thick cylinder walls!  I know they break right through the walls of the INLINE 1098…. we had someone try them, but apparently the 998 A+ might accept that piston!  Let’s see  2.54 + .130= 2.67 (hmm, only .110″ smaller  than a 1275 standard bore!)…. So even with the nice short stroke of a 998….  Volume = pi x r-squared x stroke x 4 cylinders, so that’s 67.16 cubic inches or right at 1100cc!

Why not just go with a 1098?  It has a horribly long stroke… same as a 1275!  IMHO, the worst combination of any of the A series engines for performance use.  The silver dollar pistons just don’t allow any valve size, so (again IMHO) just a terrible combination unless your objective is to cross the outback – slowly!  And, a bonus with the way overbored 998, I can fit the standard 1275 aluminum head without any block mods!

Lets go have a look at the poor truck, tarped up outside….  My personal feeling is that you would rather get progress updates about a project like this over endless emails about the “greatest sale ever”

Mini Pickup shell

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Is it blasphemy or a very cool look for a “resto-mod”?  I’m often amazed by how militant some people get about other people’s modifications.  I’ve made no secret about my own preference for larger wheels… Besides the advantages provided by simple physics – the ability to run bigger brakes, a more favorable contact patch,  I LIKE the look of a low-profile tire on a larger diameter wheel to achieve about the same overall circumference!

It has been suggested that I feature another of my posts from the Mini Mania Forum, this one dealing with considerations for different wheel and tire combinations in all the popular sizes one sees on Classic Minis.  It started as a discussion of the WEIGHT of the different combinations, so I weighed as many wheels and tires as I could get my hands on.   I took one of my 13 x 5 “Minators” with the Yokohama A539 175/50-13,  and my original S 10 inch spare off my own car, and put them on the FedEx scale.   Here’s the post, a thread that actually goes back several years:

http://www.minimania.com/msgThread/112670/1/1/Tire_Comparison__10__12__and_13_inch_tire_weights

This once again illustrates the gold mine of information that is so easily searchable on the Mini Mania Forum.   Informative topics and posts disappear off the “Front Page” in a few days,  but that info is right at your fingertips by searching a few key words.  You can even search by name!

 

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